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Alkali metal when exposed to air it forms the following compounds

Option: 1

Oxides


Option: 2

Hydroxides


Option: 3

Carbonates


Option: 4

All of these


Answers (1)

best_answer

As we learnt in action of air on alkali metals

\\4M (s)+O{_{2}}(g))\rightarrow 2M_{2}O(s)\\ M{_{}}{_{2}}O (s) +H{_{2}}O (\ell)\rightarrow 2MOH+CO{_{2}}\rightarrow M{_{2}}CO_{3}(s)+H{_{2}} O (l) (M=alkali\ metal)

Upon exposing alkali metal to air it forms oxides hydroxides and carbonates.

Therefore, option(4) is correct.

Posted by

Sanket Gandhi

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