Which among the following pairs of molecules have zero dipole moment ? .

Options

A. `SiF_(4)` and `CO_(2)`
B. `SiF_(4)` and `NO_(2)`
C. `O_(2)` and `CO_(2)`
D. `NO_(2)` and `O_(3)`

Answer

A, C, D

Explanation

`SiF_(4)` is `sp^(3)` hybridised and tetrahedral `so mu = 0`
`CO_(2)` is ps hybridised and is linear `so mu = 0`
(b) `O_(2)` is non-polar and symmetrical `so mu = 0`
(c ) `NO_(2)` and `O_(3)` are unsymmetrical molecule so `mu ne 0`
.