Find empirical formula of the compound containing a metal, $M=68 \%$ (atomic mass =34) and remaining $32 \%$ oxygen.

• Correct answer
  A

  $M O$
• B

  $M_2 \mathrm{O}$
• C

  $\mathrm{MO}_2$
• D

  $M_2 \mathrm{O}_3$

Solution

$\therefore \quad$ Empirical formula $=M O$

Hence, the correct answer is option: 'A'.