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Cobalt

Key Stage 2

Meaning

Cobalt is a magnetic metal.

Key Stage 3

Meaning

Cobalt is a transition metal element, on the Periodic Table, with an atomic number of 27.

About Cobalt

Molecular Structure

Cobalt has the chemical symbol Co.
Cobalt atoms join together in large numbers to form a giant metal molecule.

Atomic Structure

Cobalt as 27 protons and 32 neutrons in its nucleus giving it an Atomic Number of 27 and an atomic mass of 59.
Cobalt is in Period 4 of the Periodic Table because it has 4 electron shells.

Properties

Cobalt is a metal element so it is a good thermal conductor and a good electrical conductor.
Cobalt is a shiny solid at room temperature.
Cobalt is malleable.
Cobalt is sonorous.
Cobalt is ductile.
Cobalt is magnetic.

Key Stage 4

Meaning

Cobalt is a transition metal element, on the Periodic Table, with 27 protons in the nucleus.

About Cobalt

Molecular Structure

Cobalt has the chemical formula Co.
Cobalt atoms join together in a giant metallic structure.

Atomic Structure

The most stable isotope of Cobalt has 32 neutrons in its nucleus giving it an atomic mass of 59.
Cobalt is in Period 4 of the Periodic Table because it has 4 electron shells.
Cobalt loses electrons to form positive metal ions.

Properties

Cobalt forms ionic bonds with non-metals.
Cobalt is a metal element so it is a good thermal conductor and a good electrical conductor.
Cobalt is a shiny solid at standard temperature and pressure and has a high melting point.
Cobalt is malleable.
Cobalt is sonorous.
Cobalt is ductile.
Cobalt is magnetic.

References

AQA

Cobalt, page 245, GCSE Physics; Student Book, Collins, AQA
Cobalt, pages 48-9, GCSE Chemistry; Student Book, Collins, AQA