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Bohrium Element Facts

Data Zone | Discovery | Facts | Appearance & Characteristics | Uses | Abundance & Isotopes | References
107
Bh
(270)

The chemical element bohrium is classed as a transition metal. It was discovered in 1981 by scientists at the GSI in Darmstadt, Germany.

Data Zone

Classification: Bohrium is a transition metal
Color: steel gray presumed
Atomic weight: (270), no stable isotopes
State: solid
Melting point:
Boiling point:
Electrons: 107
Protons: 107
Neutrons in most abundant isotope: 163
Electron shells: 2,8,18,32,32,13,2
Electron configuration: [Rn] 5f14 6d5 7s2
Density @ 20oC:
Show more, including: Heats, Energies, Oxidation, Reactions,
Compounds, Radii, Conductivities
Atomic volume:
Structure:
Hardness:
Specific heat capacity –
Heat of fusion –
Heat of atomization –
Heat of vaporization –
1st ionization energy 660 kJ mol-1 (est)
2nd ionization energy –
3rd ionization energy –
Electron affinity –
Minimum oxidation number –
Min. common oxidation no. –
Maximum oxidation number –
Max. common oxidation no. –
Electronegativity (Pauling Scale) –
Polarizability volume –
Reaction with air –
Reaction with 15 M HNO3 –
Reaction with 6 M HCl –
Reaction with 6 M NaOH –
Oxide(s) –
Hydride(s) –
Chloride(s) –
Atomic radius –
Ionic radius (1+ ion) –
Ionic radius (2+ ion) –
Ionic radius (3+ ion) –
Ionic radius (1- ion) –
Ionic radius (2- ion) –
Ionic radius (3- ion) –
Thermal conductivity –
Electrical conductivity –
Freezing/Melting point: –
Niels Bohr

Bohrium is named after Niels Bohr, who was awarded the 1922 Nobel Prize in Physics for the investigation of the structure of atoms and of the radiation emanating from them.

Discovery of Bohrium

Bohrium was first claimed to have been produced in the USSR in 1976.

A verified, definite synthesis achieved in 1981 at the GSI in Darmstadt, Germany.

Bohrium was named in honor of Niels Bohr, the pioneer of quantum mechanics.

Appearance and Characteristics

Harmful effects:

Bohrium is harmful due to its radioactivity.

Characteristics:

Bohrium is a synthetically made radioactive element. Only a few atoms have ever been produced.

Bohrium decays very rapidly through the emission of α-particles.

Uses of Bohrium

Bohrium’s only use is in research.

Abundance and Isotopes

Abundance earth’s crust: nil

Abundance solar system: parts per billion by weight, parts per trillion by moles

Cost, pure: $ per 100g

Cost, bulk: $ per 100g

Source: Bohrium is produced synthetically by cold fusion.

Isotopes: Bohrium has eleven isotopes whose half-lives are known:

260Bh, 261Bh, 262Bh 264Bh, 265Bh, 266Bh, 267Bh 270Bh, 271Bh, 272B and 274Bh.

None of these isotopes are stable: the most stable is 270Bh, with a half-life of 61 seconds.

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Comments

  1. Doug Stewart says

    October 13, 2014 at 9:01 am

    Thanks for the heads up on the electron configuration data DC. We’ve corrected it now.

The Elements

A

Actinium – Aluminum – Americium – Antimony – Argon – Arsenic – Astatine

B

Barium – Berkelium – Beryllium – Bismuth – Bohrium – Boron – Bromine

C

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D – E

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Fermium – Flerovium – Fluorine – Francium – Gadolinium – Gallium – Germanium – Gold

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M

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N – O

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P

Palladium – Phosphorus – Platinum – Plutonium – Polonium – Potassium – Praseodymium – Promethium – Protactinium

R

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S

Samarium – Scandium – Seaborgium – Selenium – Silicon – Silver – Sodium – Strontium – Sulfur

T

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U – Z

Uranium – Vanadium – Xenon – Ytterbium – Yttrium – Zinc – Zirconium

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