Why is melting point of magnesium less than calcium although melting point decrease down the group?

Answer 1

Because although melting points generally decrease going down the group, the structure of calcium, a giant metallic structure, will require more energy to break the forces

Answer 2

The melting point of magnesium is lower than calcium because although melting points generally decrease down a group, there can be exceptions due to variations in atomic size, packing efficiency, and bonding forces. In this case, the smaller size and stronger metallic bonding in calcium result in a higher melting point compared to magnesium, despite being further down the group.

Answer 3

because hall 's of magnesium larger than hall 's of calcium