Question

Property of the alkaline earth metals that increases with their atomic number:

• A. solubility of their hydroxides in water
• B. solubility of their sulphates in water
• C. ionization energy
• D. electronegativity

Answer 1

The correct option is A solubility of their hydroxides in water

- The solubility of sulphates of alkaline earth metals decreases down the group due to the increase in lattice energy of sulphates down the group which predominates over hydration energy.

- the solubility of hydroxide of alkaline earth metals increases down the group due to the decrease in lattice energy and the hydration energy remains fairly constant.

- Ionization energy decreases down the group.

- Electronegative character decreases.