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How does the melting point of the alkali metals change down the group?
It increases
why are all noble gases unreactive?
They have a full outer shell of electrons and therefore do not need to gain, lose or share electrons
How are noble gases naturally found?
As monatomic gases (one atom)
How does the boiling point of the noble gases change down the group?
The boiling points increase
Because atoms are bigger
And there are more intermolecular forces Which
Which require a larger amount of energy to overcome