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Bohrium (Bh) – Element 107 of the periodic table

Bohrium (symbol Bh) is element number 107 of the periodic table and belongs to the “Transition metal” category. Its atomic mass is about 270, and its phase under standard conditions is Solid (a theoretical prediction). This element sits in period 7 and group 7 of the periodic table, and its electrons are arranged in shells of 2, 8, 18, 32, 32, 13, 2. The short electron configuration of Bohrium is [Rn] 5f¹⁴ 6d⁵ 7s². Known uses of Bohrium include Scientific research.

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Bohrium is a radioactive, mostly synthetic element; its data may be based on limited experiments or theoretical prediction.

Properties of Bohrium

Atomic number
107
Chemical symbol
Bh
Atomic mass
270
Category
Transition metal
Period
7
Group
7
Phase
Solid (a theoretical prediction)
Protons
107
Electrons
107
Neutrons (approx.)
163
Electron shells
2, 8, 18, 32, 32, 13, 2
Outer-shell electrons
2
Discovered
GSI Helmholtz Centre for Heavy Ion Research (1981)

Electron configuration of Bohrium

The electron configuration of Bohrium (Bh), with 107 electrons, is shown below. The last shell (shell 7) is highlighted:

Full configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f¹⁴ 6s² 6p⁶ 6d⁵ 7s²
Short configuration
[Rn] 5f¹⁴ 6d⁵ 7s²
Last shell
7s²

This synthetic element’s electron configuration is a theoretical prediction.

What is electron configuration and how is it written?

Electron shells of Bohrium

Distribution of 107 electrons of Bohrium across shells K to Q:

  1. K2
  2. L8
  3. M18
  4. N32
  5. O32
  6. P13
  7. Q2

What is a transition metal?

The transition metals are the d-block elements: usually good conductors of heat and electricity, with several oxidation states, and they form colourful compounds and important catalysts.

Uses of Bohrium

Frequently asked questions about Bohrium

What is the atomic number of Bohrium?

The atomic number of Bohrium (Bh) is 107; that is, every atom of it has 107 protons.

What is the electron configuration of Bohrium?

The electron configuration of Bohrium (Bh) is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f¹⁴ 6s² 6p⁶ 6d⁵ 7s²; in short form it is [Rn] 5f¹⁴ 6d⁵ 7s², and its last shell is 7s².

What is the chemical symbol of Bohrium?

The chemical symbol of Bohrium is Bh.

Where is Bohrium located in the periodic table?

Bohrium is located in period 7 and group 7 and belongs to the “Transition metal” category.

What is the atomic mass of Bohrium?

The atomic mass of Bohrium is about 270 (atomic mass units).

What is the phase of Bohrium under normal conditions?

The phase of Bohrium under standard conditions is Solid (a theoretical prediction).

What are the uses of Bohrium?

Uses of Bohrium include Scientific research.

Who discovered Bohrium?

Bohrium was discovered by GSI Helmholtz Centre for Heavy Ion Research in 1981.

Elements in the same category as Bohrium (Transition metal)

Palladium (Pd)Silver (Ag)Cadmium (Cd)Hafnium (Hf)Tantalum (Ta)Tungsten (W)Rhenium (Re)Osmium (Os)Iridium (Ir)Platinum (Pt)Gold (Au)Mercury (Hg)Rutherfordium (Rf)Dubnium (Db)Seaborgium (Sg)Hassium (Hs)Meitnerium (Mt)Darmstadtium (Ds)Roentgenium (Rg)Copernicium (Cn)

See all Transition metals

Bohrium’s group 7 neighbours

Manganese (Mn)Technetium (Tc)Rhenium (Re)

Group 7 of the periodic table