Which of the following attain the linear structure ?

Options

A. `Be Cl_(2)`
B. `NCO^(+)`
C. `NO_(2)`
D. `CS_(2)`

Answer

C, D

Explanation

`BeCl_(2) (Cl-Be-Cl) and CS_(2) (S=C=S)` both are linear `NCO^(+)` is non-linear . However, remember that
`""^(-)NCO(""^(-)N= C = O )` is linear because it is isoelectronic with `CO_(2)`.
`NO_(2)` is angular with angle `132^(@)` and each O-N bond length of `1.20Å` (intermediate between single
and double bond) .