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4 Terms

1
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Why are nobles gases unreactive

-They have a full outer energy level. so as their outer shell is energetically stable they don’t need to give up or gain electrons to become more stable.

2
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Which element has 2 electrons in their outer shell

Helium

3
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Describe the trend of boiling point as you move down and why

The boiling points of the nobles gases increases as the relative atomic mass increases.

This is because there is an increased in the number of electrons in each atom leading to greater intermolecular forces which need to be overcome

4
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Why state are noble gases at room temperature

Gas