S Block Elements Question 77

Question: Which of the following ions forms highly soluble hydroxide in water

[CPMT 1974, 76, 79, 82]

Options:

A) $ {{K}^{+}} $

B) $ Z{{n}^{++}} $

C) $ A{{l}^{+++}} $

D) $ C{{a}^{++}} $

Show Answer

Answer:

Correct Answer: A

Solution:

$ {{K}^{+}} $ is highly soluble because of high hydration energy.