Games
11
20
Medium

This is a non-metal and the most abundant element in the Universe. It is the basic fuel for nuclear reactions in the stars. It is a gaseous substance on Earth and the lightest element in the Universe.

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1

H

Hydrogen
18

N

Argon
6

C

Carbon
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Hydrogen
13
21
Medium

This element is a transition metal used in large amounts by the electrical industry in the form of wire. This metal is the second-best in the electrical conductance. Because this element resists corrosion in air, moisture and seawater, it has been widely used in coins.

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29

Cu

Copper
26

Fe

Iron
80

Hg

Mercury
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Copper
19
20
Hard

This is a transition metal. This is a metal of the platinum family and it is the most corrosion-resistant metal known. It is used in the production of the alloys with osmium and platinum and in the production of crucibles and devices requiring high temperatures.

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77

Ir

Iridium
26

Zn

Iron
22

Ti

Titanium
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Iridium

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