Periodic Table/Copernicium

← RgNh →

112Cn285 Da

Copernicium

Transition Metal·Period 7, Group 12·s-block

Gallery

Chemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/copernicium.php

Physical Propertiesmass · density · phase · crystal

Atomic Mass

285Da

Density

14g/cm³

Phase (STP)

Solid

Melting Point

—

Boiling Point

—

Molar Heat

—

Crystal Structure

—

Atomic Radiiatomic · covalent · van der Waals

Atomic (Empirical)

—

Covalent

122.00pm

Van der Waals

—

Electronic Propertieselectronegativity · ionization · affinity

Electron Configuration

[Rn] 5f14 6d10 7s2

Electron Shells

2, 8, 18, 32, 32, 18, 2

Electronegativity

—

Electron Affinity

—

1st Ionization Energy

—

Oxidation States

Orbital DiagramAufbau · Hund's rule · Pauli exclusion

↑↓

1s²

↑↓

2s²

↑↓

2p⁶

↑↓

3s²

↑↓

3p⁶

↑↓

3d¹⁰

↑↓

4s²

↑↓

4p⁶

↑↓

4d¹⁰

↑↓

4f¹⁴

↑↓

5s²

↑↓

5p⁶

↑↓

5d¹⁰

↑↓

6s²

↑↓

6p⁶

↑↓

5f¹⁴

↑↓

6d¹⁰

↑↓

7s²

Full: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 5f14 6d10 7s2Short: [Rn] 5f14 6d10 7s2

Abundanceby mass

Biological Role

No biological role

Synthetic, radioactive element. No biological role.

Discovery

Discovered By

GSI Helmholtz Centre for Heavy Ion Research

Named By

—

Year

1996

Nuclear Data

Known Isotopes

Stable Isotopes

Stable Mass Numbers

None

Isotopes of Cn13 known

Nuclide	Z	N	Mass (AMU)	Half-life	Decay	Jπ	Abundance
²⁷⁶Cn	112	164	276.161418	Unknown	α, SF	0+	—
²⁷⁷Cn	112	165	277.163535	790 μs	α (1%)	—	—
²⁷⁸Cn	112	166	278.164083	Unknown	α, SF	0+	—
²⁸⁶Cn	112	174	286.178691	30.0 s	α (1%), SF	0+	—
²⁸⁷Cn	112	175	287.181826	Unknown	α, SF	—	—
²⁸⁸Cn	112	176	288.183501	Unknown	α, SF	0+	—

Click any isotope for its full page with decay chain:

²⁷⁶Cn ²⁷⁷Cn ²⁷⁸Cn ²⁷⁹Cn ²⁸⁰Cn ²⁸¹Cn ²⁸²Cn ²⁸³Cn ²⁸⁴Cn ²⁸⁵Cn ²⁸⁶Cn ²⁸⁷Cn ²⁸⁸Cn

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