Which of the following pairs have different hybridisation and same shape-
[I] `NO_(3)^(-) and CO_(3)^(2-)`
[II] `SO_(2) and NO_(2)^(-)`
[III] `XeF_(2) and CO_(2)`
[IV] `H_(2)O and NH_(3)`

Options

A. I and IV
B. II and IV
C. III
D. none of these

Answer

C

Explanation

[I] `NO_(3)^(-)` (`sp^(2)`, trigonal planar),
`CO_(3)^(2-)` (`sp^(2)`-trigonal planar) ,
Same hybridisation and same shape,
[II] `SO_(2)(sp^(2)" bent"),NO_(2)^(-)(sp^(2)," bent")`
Different hybridisation but same shapes.
[III] `XeF_(2)(sp^(2)d," linear"),CO_(2)(sp," linear")`
Different hybridisation but same shapes.
[IV] `H_(2)O(sp^(3)," angular"),NH_(3)(sp^(3)," pyramidal")`