Games
9
20
Easy

What Element has the Symbol Co?

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27

Co

Cobalt
29

Cm

Copper
112

Cn

Copernicium
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Cobalt
12
21
Medium

This is a non-metal and it is a structural element of all biomolecules and living beings. Three naturally occurring allotropes of this element are known to exist: amorphous, graphite and diamond.

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6

C

Carbon
1

H

Hydrogen
15

P

Phosphorus
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Carbon
20
20
Hard

This element is classified as a lanthanide and it is the most abundant of the rare-earth elements of the earth’s crust. It is the most reactive of the rare-earth metals and is used as a catalyst to refine petroleum.

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58

Ce

Cerium
68

Eu

Erbium
71

Lu

Lutetium
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Cerium

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