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1.15 g of a metallic element reacts with 300 cm3 of oxygen at 298 K and 1 atm pressure, to form

an oxide which contains O2– ions.

What could be the identity of the metal?

A calcium

B magnesium

C potassium

D sodium

Verified Answer :

The best and most correct answer among the choices provided by the question is the second choice or letter B.

Based on the given data, we can conclude the the metal is magnesium.

I hope my answers has come to your help. God bless and have a nice day ahead!

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