S Block Elements Question 4

Question: Which of the following salts is insoluble in water at room temperature but soluble in boiling water

[MP PMT 1993]

Options:

A) $ CaCl_2 $

B) $ BaCl_2 $

C) $ SrCl_2 $

D) $ PbCl_2 $

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Answer:

Correct Answer: D

Solution:

Due to the inert pair effect.