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About Bismuth

Bismuth Bohr Model

Though bismuth is twice as abundant as gold in the earth’s crust, early man appears to have remained largely ignorant of its existence (with the sole exception of certain bronze Incan knives unearthed in Machu Picchu). The first written reference to the metal was by the German monk Basilius Valentinus in 1450 who called it "wismut," from the German weisse masse (meaning white mass, also translated as meadow mines); around that time, mines in Schönberg began extracting bismuth ores for use in pigments and dyes. 16th century Christian scholar Georgius Agricola was the first to clearly distinguish bismuth as an element distinct from antimony, lead, tin or zinc, metals with which it was frequently misidentified, and Claude François Geoffroy finally isolated the metal in 1738.

The exact etymology of the name bismuth is debated: the most likely candidate is bisemutum, Agricola’s Latinized translation of wismut, but other suggested origins are the Arabic bi ismid, meaning “possessing the properties of antimony,” and psimydos, a corruption of the Greek psimythion meaning “white lead.” Alchemists also referred to the metal as tectum argenti, or "silver being made," due to the frequent presence of bismuth ores atop those of silver. Besides pigments, early uses of bismuth compounds were mainly limited to medical treatments of digestive disorders and as additives to pewter alloys. Demand for bismuth remained low until World War I, when it was utilized in solders and alloys, and rose dramatically throughout the years as it began to be used as an additive in aluminum, iron, and steels, and again when it gained attention as alternative to lead and cadmium due to its low toxicity (unusual for a heavy metal).

Bismuth is classified as a p-block “poor metal,” which refers to its proximity to the border between metals and non-metals on the periodic table. In its elemental form, bismuth is a silvery-white crystalline solid that oxidizes to pink when exposed to air and burns with a blue flame, forming the yellow oxide; high purity bismuth metal can form brilliant rainbow-colored Hopper crystals that are easily grown at home in an oven. Both soft and extremely brittle, bismuth metal is higher in density as a liquid than as a solid, meaning that it expands in volume as it cools; the only other elements that exhibit this property are antimony, germanium, silicon, and gallium. Bismuth has several notable properties: compared to all other metals, it is the most strongly diamagnetic, possesses the lowest thermal conductivity (with the exception of mercury), and exhibits the highest Hall Effect, or increase in electrical resistance in a magnetic field. It is also the heaviest element that is ostensibly stable, its only stable isotope (209-Bi) having a half-life of more than a billion times the age of the universe: 1 yottasecond, the equivalent to 32 quadrillion years. Bismuth occasionally occurs as a free element in nature and in minerals such as bismuthinite, bismite, and bismoclite. It is also produced as a byproduct of lead, copper, tin, molybdenum and tungsten extraction, and by recycling. Its sulfide and oxide forms are the most commercially important.

Applications for bismuth metal and its compounds are numerous. With other metals such as tin, cadmium, and lead, bismuth forms low-melting alloys which are extensively used in the automotive and aviation industries, safety devices in fire extinguishing systems, and solders. Bismuth is also used in malleable irons, steels for free machining, and isostatic lead-bismuth eutectic (LBE) used in nuclear reactors; because it expands on solidification, alloys of bismuth are well-suited for the making of sharp castings of objects subject to damage by high temperatures. Bismuth metal is used as a thermocouple material, an electrocatalyst for converting CO2 to CO for alternative fuels, and a carrier for uranium 235-U or 233-U fuel in nuclear reactors. Its soluble salts are characterized by forming insoluble basic salts with the addition of water, a property sometimes used in detection work. Industrial applications for compounds and alloys include solders, lead-free ammunition, additives for casting and galvanizing, lubricants, pyrotechnics, cosmetics, glazes and pigments, and catalysts for making acrylic fibers and high density foams. The most common medical use of bismuth is in the commercial digestive aid bismuth subsalicylate, more commonly known as Pepto-Bismol (57% bismuth by weight).

Crystalline bismuth compounds play an important role in advanced and emerging technologies. Bismuth telluride is a semiconductor that exhibits the thermoelectric effect when alloyed with antimony or selenium. Bismuth selenide is a topological insulator, a unique hybrid material with an insulating core and conductive surface with applications in spintronics-based electronics and quantum computers. Another unique topological insulator is sodium bismuthide (Na3Bi), a type of material known as a “three-dimensional topological Dirac semi-metal” that can be more efficiently fabricated than its two-dimensional analog of graphene. Researchers have identified superconducting bismuth compounds like silver-doped bismuth oxysulphide and bismuth strontium calcium copper oxide (BSCCO), one of several materials that exhibits the highest measured superconducting transition temperatures. Bismuth Ferrite (BFO) is a perovskite crystal that is piezoelectric, multiferroic, and can act as a nanoscale shape memory material for integrating photonic and electrical components in plasmonic devices or used in high-temperature supercapacitors for electric vehicles.


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High Purity (99.999%) Bismuth Oxid e(Bi2O3) Powder Bismuth expands on solidification. This property makes bismuth alloys particularly well suited to the making of sharp castings of objects subject to damage by high temperatures. With other metals such as tin, cadmium, etc., bismuth forms low-melting alloys which are extensively used for safety devices in fire detection and extinguishing systems. Bismuth is also used in producing malleable irons and is finding use as a catalyst for making acrylic fibers. High Purity (99.9999%) Bismuth (Bi) Sputtering Target When bismuth is heated in air it burns with a blue flame, forming yellow fumes of the oxide. The metal is also used as a thermocoupling material, and has found application as a carrier for 235 U or 233 U fuel in nuclear reactors. Its soluble salts are characterized by forming insoluble basic salts with the addition of water, a property sometimes used in detection work. Bismuth oxychloride is used extensively in cosmetics. Elemental or metallic forms of bismuth include pellets, rod, wire and granules for evaporation source material purposes. Bismuth oxide is available in forms including powders and dense pellets for such uses as optical coating and thin film applications. Oxides tend to be insoluble. Bismuth fluorides are another insoluble form for uses in which oxygen is undesirable such as metallurgy, chemical and physical vapor deposition and in some optical coatings. Bismuth is also available in soluble forms including chlorides, nitrates and acetates. These compounds are manufactured as solutions at specified stoichiometries.

Bismuth Properties

Bismuth (Bi) atomic and molecular weight, atomic number and elemental symbol Bismuth is a Block P, Group 15, Period 6 element. The number of electrons in each of Bismuth's shells is 2, 8, 18, 32, 18, 5 and its electron configuration is [Xe] 4f14 5d10 6s2 6p3. Bismuth Bohr ModelThe bismuth atom has a radius of and its Van der Waals radius is In its elemental form, CAS 7440-69-9, bismuth is a silvery white brittle metal. Bismuth is the most diamagnetic of all metals and, with the exception of mercury; its thermal conductivity is lower than any other metal.Elemental Bismuth Bismuth has a high electrical resistance, and has the highest Hall Effect of any metal (i.e., greatest increase in electrical resistance when placed in a magnetic field). Bismuth is found in bismuthinite Bi2S3 and bismite Bi2O3. It is also produced as a byproduct of lead, copper, tin, molybdenum and tungsten extraction. The name Bismuth originates from the German word 'wissmuth' meaning white mass. Bismuth information, including technical data, safety data, high purity properties, research, applications and other useful facts are discussed below. Scientific facts such as the atomic structure, ionization energy, abundance on earth, conductivity and thermal properties are also included.

Symbol: Bi
Atomic Number: 83
Atomic Weight: 208.9804
Element Category: post-transition metal
Group, Period, Block: 15 (pnictogens), 6, p
Color: lustrous reddish white
Other Names: N/A
Melting Point: 271.3 °C, 520.34 °F, 544.45 K
Boiling Point: 1560.0 °C, 2840.0 °F, 1833.15 K
Density: 9.78 g/cm3
Liquid Density @ Melting Point: 10.05 g/cm3
Density @ 20°C: 9.807 g/cm3
Density of Solid: 9780 kg·m3
Specific Heat: 0.123 c in J/g/K
Superconductivity Temperature: N/A
Triple Point: N/A
Critical Point: N/A
Heat of Fusion (kJ·mol-1): 10.48
Heat of Vaporization (kJ·mol-1): 179.1
Heat of Atomization (kJ·mol-1): 207.36
Thermal Conductivity: 7.97 W·m?1·K?1
Thermal Expansion: (25 °C) 13.4 µm·m-1·K-1
Electrical Resistivity: (20 °C) 1.29 µ Ω·m
Tensile Strength: N/A
Molar Heat Capacity: 25.52 J·mol-1·K-1
Young's Modulus: 32 GPa
Shear Modulus: 12 GPa
Bulk Modulus: 31 GPa
Poisson Ratio: 0.33
Mohs Hardness: 2.25
Vickers Hardness: N/A
Brinell Hardness: 94.2 MPa
Speed of Sound: (20 °C) 1790 m·s-1
Pauling Electronegativity: 2.02
Sanderson Electronegativity: 2.34
Allred Rochow Electronegativity: 1.67
Mulliken-Jaffe Electronegativity: 2.15 (20% s orbital)
Allen Electronegativity: N/A
Pauling Electropositivity: 1.98
Reflectivity (%): N/A
Refractive Index: N/A
Electrons: 83
Protons: 83
Neutrons: 126
Electron Configuration: [Xe] 4f14 5d10 6s2 6p3
Atomic Radius: 156 pm
Atomic Radius,
non-bonded (Å):
Covalent Radius: 148±4 pm
Covalent Radius (Å): 1.5
Van der Waals Radius: 207 pm
Oxidation States: 5, 4, 3, 2, 1 (mildly acidic oxide)
Phase: Solid
Crystal Structure: Rhombohedral
Magnetic Ordering: diamagnetic
Electron Affinity (kJ·mol-1) 90.892
1st Ionization Energy: 702.96 kJ·mol-1
2nd Ionization Energy: 1610.35 kJ·mol-1
3rd Ionization Energy: 2466.18 kJ·mol-1
CAS Number: 7440-69-9
EC Number: 231-177-4
MDL Number: MFCD00134033
Beilstein Number: N/A
SMILES Identifier: [Bi]
InChI Identifier: InChI=1S/Bi
PubChem CID: 5359367
ChemSpider ID: 4514266
Earth - Total:  2.94 ppb
Mercury - Total: 0.034 ppb
Venus - Total: 3.08 ppb
Earth - Seawater (Oceans), ppb by weight: 0.02
Earth - Seawater (Oceans), ppb by atoms: 0.00059
Earth -  Crust (Crustal Rocks), ppb by weight: 25
Earth -  Crust (Crustal Rocks), ppb by atoms: 2
Sun - Total, ppb by weight: 10
Sun - Total, ppb by atoms: 0.07
Stream, ppb by weight: N/A
Stream, ppb by atoms: N/A
Meterorite (Carbonaceous), ppb by weight: 70
Meterorite (Carbonaceous), ppb by atoms: 5
Typical Human Body, ppb by weight: 300
Typical Human Body, ppb by atom: 14
Universe, ppb by weight: 10
Universe, ppb by atom: 0.09
Discovered By: Claude François Geoffroy
Discovery Date: 1753
First Isolation: N/A

Health, Safety & Transportation Information for Elemental Bismuth

Bismuth is not toxic, however, safety data for Bismuth metal, nanoparticles and compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific Bismuth material or compound referenced in the “Products” tab. The below information applies to elemental (metallic) Bismuth.

Safety Data
Signal Word Warning
Hazard Statements H228
Hazard Codes F
Risk Codes 11
Safety Precautions 16
RTECS Number EB2600000
Transport Information UN 3089 4.1/PG 2
WGK Germany nwg
Globally Harmonized System of
Classification and Labelling (GHS)
Review and Print SDS for Bismuth Metal


Date Created: 05/15/2015
Date Revised: 05/15/2015


Product Name: Bismuth Metal

Product Number: All applicable American Elements product codes, e.g. BI-M-02, BI-M-03, BI-M-04, BI-M-05, BI-M-06

CAS #: 7440-69-9

Relevant identified uses of the substance: Scientific research and development

Supplier details:
American Elements
1093 Broxton Ave. Suite 2000
Los Angeles, CA 90024
Tel: +1 310-208-0551
Fax: +1 310-208-0351

Emergency telephone number:
Domestic, North America +1 800-424-9300
International +1 703-527-3887


Classification of the substance or mixture
Classification according to Regulation (EC) No 1272/2008
The substance is not classified as hazardous to health or the environment according to the CLP regulation.
Classification according to Directive 67/548/EEC or Directive 1999/45/EC
Not applicable
Information concerning particular hazards for human and environment:
No information known.
Hazards not otherwise classified
No information known.
Label elements
Labelling according to Regulation (EC) No 1272/2008
Not applicable
Hazard pictograms
Not applicable
Signal word
Not applicable
Hazard statements
Not applicable
WHMIS classification
Not controlled
Classification system
HMIS ratings (scale 0-4)
(Hazardous Materials Identification System)

Health (acute effects) = 1
Flammability = 0
Physical Hazard = 0
Other hazards
Results of PBT and vPvB assessment
PBT: Not applicable.
vPvB: Not applicable


Chemical characterization: Substances
CAS# Description:
7440-69-9 Bismuth
Identification number(s):
EC number: 231-177-4


Description of first aid measures
General information
No special measures required.
After inhalation
Seek medical treatment in case of complaints.
After skin contact
Generally the product does not irritate the skin.
After eye contact
Rinse opened eye for several minutes under running water. If symptoms persist, consult a doctor.
After swallowing
If symptoms persist consult doctor.
Information for doctor
Most important symptoms and effects, both acute and delayed
No further relevant information available.
Indication of any immediate medical attention and special treatment needed
No further relevant information available.


Extinguishing media
Suitable extinguishing agents
Special powder for metal fires. Do not use water.
For safety reasons unsuitable extinguishing agents
Special hazards arising from the substance or mixture
If this product is involved in a fire, the following can be released:
Metal oxide fume
Advice for firefighters
Protective equipment:
No special measures required.


Personal precautions, protective equipment and emergency procedures
Not required.
Environmental precautions:
Do not allow material to be released to the environment without proper governmental permits.
Do not allow product to reach sewage system or any water course.
Do not allow to penetrate the ground/soil.
Methods and material for containment and cleaning up:
Pick up mechanically.
Prevention of secondary hazards:
No special measures required.
Reference to other sections
See Section 7 for information on safe handling
See Section 8 for information on personal protection equipment.
See Section 13 for disposal information.


Precautions for safe handling
Keep container tightly sealed.
Store in cool, dry place in tightly closed containers.
Information about protection against explosions and fires:
No special measures required.
Conditions for safe storage, including any incompatibilities
Requirements to be met by storerooms and receptacles:
No special requirements.
Information about storage in one common storage facility:
Do not store together with acids.
Store away from oxidizing agents.
Store away from halogens.
Further information about storage conditions:
Keep container tightly sealed.
Store in cool, dry conditions in well sealed containers.
Specific end use(s)
No further relevant information available.


Additional information about design of technical systems:
No further data; see section 7.
Control parameters
Components with limit values that require monitoring at the workplace:
The product does not contain any relevant quantities of materials with critical values that have to be monitored at the workplace.
Additional information: No data
Exposure controls
Personal protective equipment
General protective and hygienic measures
The usual precautionary measures for handling chemicals should be followed.
Maintain an ergonomically appropriate working environment.
Breathing equipment: Not required.
Protection of hands: Not required.
Penetration time of glove material (in minutes)
Not determined
Eye protection: Safety glasses
Body protection: Protective work clothing.


Information on basic physical and chemical properties
General Information
Form: Solid in various forms
Color: Grey
Odor: Odorless
Odor threshold: Not determined.
pH-value: Not applicable.
Change in condition
Melting point/Melting range: 271.4 °C (521 °F)
Boiling point/Boiling range: 1564 °C (2847 °F)
Sublimation temperature / start: Not determined
Flash point: Not applicable
Flammability (solid, gaseous): Not determined.
Ignition temperature: Not determined
Decomposition temperature: Not determined
Auto igniting: Not determined.
Danger of explosion: Not determined.
Explosion limits:
Lower: Not determined
Upper: Not determined
Vapor pressure at 840 °C (1544 °F): 1 hPa (1 mm Hg)
Density at 20 °C (68 °F): 9.79 g/cm³ (81.698 lbs/gal)
Bulk density at 20 °C (68 °F): 6000 kg/m³
Relative density: Not determined.
Vapor density: Not applicable.
Evaporation rate: Not applicable.
Solubility in / Miscibility with Water: Insoluble
Partition coefficient (n-octanol/water): Not determined.
dynamic: Not applicable.
kinematic: Not applicable.
Other information
No further relevant information available.


No information known.
Chemical stability
Stable under recommended storage conditions.
Thermal decomposition / conditions to be avoided:
Decomposition will not occur if used and stored according to specifications.
Possibility of hazardous reactions
No dangerous reactions known
Conditions to avoid
No further relevant information available.
Incompatible materials:
Oxidizing agents
Hazardous decomposition products:
Metal oxide fume


Information on toxicological effects
Acute toxicity:
The Registry of Toxic Effects of Chemical Substances (RTECS) contains acute toxicity data for this substance.
LD/LC50 values that are relevant for classification: Oral LD50 5000 mg/kg (rat)
Skin irritation or corrosion: No irritant effect.
Eye irritation or corrosion: May cause irritation
Sensitization: No sensitizing effects known.
Germ cell mutagenicity: No effects known.
No classification data on carcinogenic properties of this material is available from the EPA, IARC, NTP, OSHA or ACGIH.
Reproductive toxicity: No effects known.
Specific target organ system toxicity - repeated exposure: No effects known.
Specific target organ system toxicity - single exposure: No effects known.
Aspiration hazard: No effects known.
Subacute to chronic toxicity: No effects known.
Additional toxicological information:
To the best of our knowledge the acute and chronic toxicity of this substance is not fully known.


Aquatic toxicity:
No further relevant information available.
Persistence and degradability
No further relevant information available.
Bioaccumulative potential
No further relevant information available.
Mobility in soil
No further relevant information available.
Additional ecological information:
General notes:
Do not allow material to be released to the
environment without proper governmental permits.
Avoid transfer into the environment.
Results of PBT and vPvB assessment
PBT: Not applicable.
vPvB: Not applicable.
Other adverse effects
No further relevant information available


Waste treatment methods
Consult state, local or national regulations to ensure proper disposal.
Uncleaned packagings:
Disposal must be made according to official regulations


Not applicable
UN proper shipping name
Not applicable
Transport hazard class(es)
Not applicable
Packing group
Not applicable
Environmental hazards:
Not applicable.
Special precautions for user
Not applicable.
Transport in bulk according to Annex II of MARPOL73/78 and the IBC Code
Not applicable.
Transport/Additional information:
Marine Pollutant (DOT):
UN "Model Regulation":


Safety, health and environmental regulations/legislation specific for the substance or mixture
National regulations
All components of this product are listed in the U.S. Environmental Protection Agency Toxic Substances Control Act Chemical substance Inventory.
All components of this product are listed on the Canadian Domestic Substances List (DSL).
SARA Section 313 (specific toxic chemical listings)
Substance is not listed.
California Proposition 65
Prop 65 - Chemicals known to cause cancer
Substance is not listed.
Prop 65 - Developmental toxicity
Substance is not listed.
Prop 65 - Developmental toxicity, female
Substance is not listed.
Prop 65 - Developmental toxicity, male
Substance is not listed.
Information about limitation of use:
For use only by technically qualified individuals.
Other regulations, limitations and prohibitive regulations
Substance of Very High Concern (SVHC) according to the REACH Regulations (EC) No. 1907/2006.
Substance is not listed.
The conditions of restrictions according to Article 67 and Annex XVII of the Regulation (EC) No 1907/2006 (REACH) for the manufacturing, placing on the market and use must be observed.
Substance is not listed.
Annex XIV of the REACH Regulations (requiring Authorisation for use)
Substance is not listed.
REACH - Pre-registered substances
Substance is listed.
Chemical safety assessment:
A Chemical Safety Assessment has not been carried out.


Safety Data Sheet according to Regulation (EC) No. 1907/2006 (REACH). The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. American Elements shall not be held liable for any damage resulting from handling or from contact with the above product. See reverse side of invoice or packing slip for additional terms and conditions of sale. COPYRIGHT 1997-2016 AMERICAN ELEMENTS. LICENSED GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY.

Bismuth Isotopes

Bismuth (Bi) has no stable isotopes. While Bismuth-209 has traditionally been considered a stable isotope, it is now known that it has a half-life of over 1.9×1019 years.

Nuclide Isotopic Mass Half-Life Mode of Decay Nuclear Spin Magnetic Moment Binding Energy (MeV) Natural Abundance
(% by atom)
184Bi 184.00112(14)# 6.6(15) ms Unknown 3+# N/A 1393.35 -
185Bi 184.99763(6)# 2# ms p to 184Pb 9/2-# N/A 1410.75 -
186Bi 185.99660(8) 14.8(7) ms a to 182Tl; ß+ to 186Pb (3+) N/A 1418.82 -
187Bi 186.993158(16) 32(3) ms a to 183Tl; ß+ to 187Pb 9/2-# N/A 1426.9 -
188Bi 187.99227(5) 44(3) ms a to 184Tl; ß+ to 188Pb 3+# N/A 1434.98 -
189Bi 188.98920(6) 674(11) ms a to 185Tl; ß+ to 189Pb (9/2-) N/A 1452.38 -
190Bi 189.9883(2) 6.3(1) s a to 186Tl; ß+ to 190Pb (3+) N/A 1460.46 -
191Bi 190.985786(8) 12.3(3) s a to 187Tl; ß+ to 191Pb (9/2-) N/A 1468.53 -
192Bi 191.98546(4) 34.6(9) s ß+ to 192Pb; a to 188Tl (3+) N/A 1476.61 -
193Bi 192.98296(1) 67(3) s ß+ to 193Pb; a to 189Tl (9/2-) N/A 1484.69 -
194Bi 193.98283(5) 95(3) s ß+ to 194Pb; a to 190Tl (3+) N/A 1492.77 -
195Bi 194.980651(6) 183(4) s ß+ to 195Pb; a to 191Tl (9/2-) N/A 1500.85 -
196Bi 195.980667(26) 5.1(2) min ß+ to 196Pb; a to 192Tl (3+) N/A 1508.93 -
197Bi 196.978864(9) 9.33(50) min ß+ to 197Pb; a to 193Tl (9/2-) N/A 1526.32 -
198Bi 197.97921(3) 10.3(3) min ß+ to 198Pb (2+,3+) N/A 1534.4 -
199Bi 198.977672(13) 27(1) min ß+ to 199Pb 9/2- N/A 1542.48 -
200Bi 199.978132(26) 36.4(5) min ß+ to 200Pb 7+ N/A 1550.56 -
201Bi 200.977009(16) 108(3) min ß+ to 201Pb; a to 197Tl 9/2- N/A 1558.64 -
202Bi 201.977742(22) 1.72(5) h ß+ to 202Pb; a to 198Tl 5(+#) N/A 1566.72 -
203Bi 202.976876(23) 11.76(5) h ß+ to 203Pb; a to 199Tl 9/2- N/A 1574.8 -
204Bi 203.977813(28) 11.22(10) h ß+ to 204Pb 6+ N/A 1582.87 -
205Bi 204.977389(8) 15.31(4) d EC to 205Pb 9/2- 4.16 1590.95 -
206Bi 205.978499(8) 6.243(3) d EC to 206Pb 6(+) 4.6 1599.03 -
207Bi 206.9784707(26) 32.9(14) y EC to 207Pb 9/2- 4.08 1607.11 -
208Bi 207.9797422(25) 3.68(4)E+5 y EC to 208Pb (5)+ N/A 1615.19 -
209Bi 208.9803987(16) 1.9(2)E+19 y a to 205Tl 9/2- 4.1106 1613.95 100
210Bi 209.9841204(16) 5.012(5) d ß- to 210Po; a to 206Tl 1- -0.0445 1622.03 -
211Bi 210.987269(6) 2.14(2) min a to 207Tl; ß- to 211Po 9/2- N/A 1630.11 -
212Bi 211.9912857(21) 60.55(6) min ß- to 212Po; a to 208Tl; ß- + a to 208Pb; 1(-) N/A 1628.87 -
213Bi 212.994385(5) 45.59(6) min a to 207Tl; ß- to 211Po 9/2- N/A 1636.95 -
214Bi 213.998712(12) 19.9(4) min ß- to 214Po; a to 210Tl; ß- + a to 210Pb; 1- N/A 1645.03 -
215Bi 215.001770(16) 7.6(2) min ß- to 215Po (9/2-) N/A 1643.79 -
216Bi 216.006306(12) 2.17(5) min ß- to 216Po 1-# N/A 1651.87 -
217Bi 217.00947(21)# 98.5(8) s Unknown 9/2-# N/A 1659.95 -
218Bi 218.01432(39)# 33(1) s Unknown 1-# N/A 1658.71 -