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Copernicium (Cn) – Element 112 of the periodic table

Copernicium (symbol Cn) is element number 112 of the periodic table and belongs to the “Transition metal” category. Its atomic mass is about 285, and its phase under standard conditions is Liquid (a theoretical prediction). This element sits in period 7 and group 12 of the periodic table, and its electrons are arranged in shells of 2, 8, 18, 32, 32, 18, 2. The short electron configuration of Copernicium is [Rn] 5f¹⁴ 6d¹⁰ 7s². Known uses of Copernicium include Scientific research.

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

Properties of Copernicium

Atomic number
112
Chemical symbol
Cn
Atomic mass
285
Category
Transition metal
Period
7
Group
12
Phase
Liquid (a theoretical prediction)
Protons
112
Electrons
112
Neutrons (approx.)
173
Electron shells
2, 8, 18, 32, 32, 18, 2
Outer-shell electrons
2
Discovered
GSI Helmholtz Centre for Heavy Ion Research (1996)

Electron configuration of Copernicium

The electron configuration of Copernicium (Cn), with 112 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 6d¹⁰ 7s²
Short configuration
[Rn] 5f¹⁴ 6d¹⁰ 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 Copernicium

Distribution of 112 electrons of Copernicium across shells K to Q:

  1. K2
  2. L8
  3. M18
  4. N32
  5. O32
  6. P18
  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 Copernicium

Frequently asked questions about Copernicium

What is the atomic number of Copernicium?

The atomic number of Copernicium (Cn) is 112; that is, every atom of it has 112 protons.

What is the electron configuration of Copernicium?

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

What is the chemical symbol of Copernicium?

The chemical symbol of Copernicium is Cn.

Where is Copernicium located in the periodic table?

Copernicium is located in period 7 and group 12 and belongs to the “Transition metal” category.

What is the atomic mass of Copernicium?

The atomic mass of Copernicium is about 285 (atomic mass units).

What is the phase of Copernicium under normal conditions?

The phase of Copernicium under standard conditions is Liquid (a theoretical prediction).

What are the uses of Copernicium?

Uses of Copernicium include Scientific research.

Who discovered Copernicium?

Copernicium was discovered by GSI Helmholtz Centre for Heavy Ion Research in 1996.

Elements in the same category as Copernicium (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)Bohrium (Bh)Hassium (Hs)Meitnerium (Mt)Darmstadtium (Ds)Roentgenium (Rg)

See all Transition metals

Copernicium’s group 12 neighbours

Zinc (Zn)Cadmium (Cd)Mercury (Hg)

Group 12 of the periodic table