Helium

By: Mason Hocker- block 1

3 physical properties

1. Melting Point- -272.2 C

2. Boiling Point- - 268.93 C

3.. Liquid range- 3.27 K

3 Chemical Properties

1. Gas

2. 2 protons

3. density= 0.178x10-3g.cm at 20C

3 uses/ compounds

1. Hot air Balloon

2. Balloon

3. Shielding gas for arc welding


There are 2 protons. 2 electrons and 2 isotopes

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