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- Given below are two statements : Statement I : None of the alkaline earth metal hydroxides dissolve in alkali. Statement II : Solubility of alkaline earth metal hydroxides in water increases down the group. In the light of the above statements, c
- #S - Block Elements (Alkali and Alkaline Earth Metals)
- #Joint Entrance Examination Main
- #Engineering
- #Chemistry
Given below are two statements : Statement I : None of the alkaline earth metal hydroxides dissolve in alkali. Statement II : Solubility of alkaline earth metal hydroxides in water increases down the group. In the light of the above statements, choose the most appropriate answer from the options given below:
Option: 1 Statement I is correct but Statement II is incorrect.
Option: 2 Statement I is incorrect but Statement II is correct.
Option: 3 Statement I and Statement II both are incorrect.
Option: 4 Statement I and Statement II both are correct.
Answers (1)
As we learnt,
Hydroxides of Alkaline earth metals are basic in nature and do not dissolve in Alkali.
Be is not classified as an Alkaline earth metal because its oxide and hydroxide are amphoteric in nature. Hence , statement is correct.
Solubility of alkaline earth metal hydroxide increases down the group because lattice energy dominates the hydration energy for their hydroxides. Hence, statement is correct .
Thus, the correct answer is option (4)
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