The compound(s) formed upon combustion of sodium metal in excess air is/are
(IIT-JEE, 2009)

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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NaOH

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Solution

The correct options are
A $N a_{2} O_{2}$
B $N a_{2} O$
Sodium when heated in dry air, first forms sodium oxide, then sodium peroxide.
$2 N a + \frac{1}{2} O_{2} △ \to N a_{2} O + \frac{1}{2} O_{2} △ \to N a_{2} O_{2}$

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The compound(s) formed upon combustion of sodium metal in excess air is(are)

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