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  • Which among the following metals reacts vigorously with oxygen in air to form a superoxide?Option: 1 Li

Which among the following metals reacts vigorously with oxygen in air to form a superoxide?

Option: 1

Li


Option: 2

Na


Option: 3

Cs


Option: 4

None of the above


Answers (1)

best_answer

The lithium metal in the air forms Lithium monoxide.

\mathrm{4Li+O_{2}\rightarrow 2Li_{2}O}

The sodium metal in the excess air forms sodium peroxide.
\mathrm{4Na+O_{2}\rightarrow 2Na_{2}O_{2}}

The caesium metal in the air forms caesium superoxide.

\mathrm{Cs+O_{2}\rightarrow CsO_{2}}

Hence, (3).

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mansi

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