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guajiro [1.7K]
3 years ago
5

Which three elements have lower melting point than calcium?

Chemistry
1 answer:
lakkis [162]3 years ago
6 0

Calcium belongs to the alkaline earth metal group. Within a group, the melting point decreases from top to bottom. This is because the as the atomic radii increases the outer valence electrons are shielded by the inner electrons and experience a lower nuclear attraction. As a result the bonds can be broken easily which lowers their melting point.

The three elements below Calcium ib Group II A which have a lower melting point are: Strontium (Sr), Barium (Ba) and Radium (Ra)

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