question_answer

If the electronic configuration of \[M=2,\,\,8,\,\,3\] and that of \[A=2,\,\,8,\,\,7,\] the formula of the compound is [Bihar MEE 1996]

A)                 \[{{M}_{2}}{{A}_{3}}\]  

B)                 \[M{{A}_{2}}\]

C)                 \[{{M}_{2}}A\] 

D)                 \[M{{A}_{3}}\]

E)                 \[{{M}_{3}}A\]