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Alkaline eart...

Question

Alkaline earth metal nitrates on heating decompose to give :

M (N O_{2})_{2}

and

O_{2}

only

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M O, N_{2}

and

O_{2}

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M O, N O_{2}

and

O_{2}

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M O

and

N O_{2}

only

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Solution

The correct option is C $M O, N O_{2}$ and $O_{2}$
The alkaline earth metals were Be, Mg, Ca, Sr and Ba.
On heating, the alkaline earth metal nitrates decompose to give metal oxide, nitrogen dioxide and oxygen.
$2 M (N O_{3})_{2} Δ - \to 2 M O + 4 N O_{2} + O_{2} (M = B e, M g, C a, S r, B a)$

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