Anita Akweshie-
atomic radius increases
down the group
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melting point decreases
down the group
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why does melting point decrease down the group
metallic bonding weakens as the atomic size increases
due to weakened electrostatic attraction between the nucleus and the delocalised electrons
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why is the first ionisation energy the lowest
outermost electrons are held more weakly due to the distance from the nucleus
and are the most shielded from the nuclear attraction
