The chemical formula of the oxide of $E k a -$ aluminium is:

G a O

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G a O_{2}

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G a_{2} O_{2}

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G a_{2} O_{3}

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Solution

The correct option is C $G a_{2} O_{3}$
$E k a$ -aluminium is known as $G a l l i u m$ .

Gallium forms only two oxides as ${G a}_{2} O$ or ${G a}_{2} O_{3}$ .

It's is in $+ 1$ and $+ 3$ oxidation state $.$ .

Therefore, the correct option is $D$ .

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