Question:
An alkaline earth metal 'M' readily forms water soluble sulphate and water insoluble hydroxide. Its oxide MO is very stable to heat and does not have rock-salt structure. $\mathrm{M}$ is :-
Correct Option: , 2
Solution:
[Be]
$\mathrm{BeSO}_{4}$ is water soluble
$\mathrm{Be}(\mathrm{OH})_{2}$ is water insoluble
$\mathrm{BeO}$ is stable to heat
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