JEE CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

Two elements $X$ and $Y$ have following electronic configuration
$X = 1{s^2}\,2{s^2}2{p^6}\,\,3{s^2}3{p^6}\,\,4{s^2}$
$Y = 1{s^2}\,2{s^2}2{p^6}\,\,3{s^2}3{p^5}\,$
The expected compound formed by combination of $X$ and $Y$ will be expressed as