The compound(s) formed on combustion of sodium metal in excess air is/are:

N a_{2} O_{2}

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N a_{2} O

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N a O_{2}

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N a O H

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Solution

The correct option is C $N a O_{2}$
When oxygen is in excess :
$2 N a + O_{2} \to N a_{2} O_{2}$
$N a_{2} O_{2} + O_{2} \to 2 N a O_{2}$

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