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18/09/2020 8:12 pm
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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. M is :
(1) Sr
(2) Mg
(3) Ca
(4) Be
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18/09/2020 8:14 pm
(4) Be
Explanation:
BeSO4 - Soluble in water
Be(OH)2 - Insoluble in water
Structure of BeO is Hexagonal Wurtzite.