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

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The compounds(s) formed upon combustion of sodium metal in excess air is/are
A. `Na_(2)O_(2)`
B. `Na_(2)O`
C. `NaO_(2)`
D. `NaOH`
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Correct Answer - A::B
Sodium when heated in dry air, first forms sodium oxide, then sodium peroxide.
`2Na+(1)/(2)O_(2)overset(Delta)rarr Na_(2)O+(1)/(2)O_(2)overset(Delta)rarr Na_(2)O_(2)`
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