An ionic compound is formed between a metal M and a non-metal Y. If M occupies half the octahedral voids in the cubic close-packed arrangement formed by $\mathrm{Y}$, the chemical formula of the ionic compound is

• A

  MY
• Correct answer
  B

  $\mathrm{MY}_{2}$
• C

  $M_{2} Y$
• D

  $\mathrm{MY}_{3}$

Solution

then formula of ionic compound is $\mathrm{MY}_{2}$

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