The S-block Elements Self Evaluation Test The S Block Elements Question 21

Question: Melting point of calcium halides decreases in the order

Options:

A) $ CaF_2>CaCl_2>CaBr_2>CaI_2 $

B) $ CaI_2>CaBr_2>CaCl_2>CaF_2 $

C) $ CaBr_2>CaI_2>CaF_2>CaCl_2 $

D) $ CaCl_2>CaBr_2>CaI_2>CaF_2 $

Answer:

Correct Answer: A

Solution:

[a] As the size of the anion increases, the covalent character increases and hence the m.p. decrease.