On the basis of LCAO-MO theory, the magnetic characteristics of N₂ and $${\text{N}}_2^ + $$ are

Which of the following species has two non-bonded electron pairs on the central atom?

A. TeCI₄

B. CIF₃

C. lCl₂

D. PCl₃

The spinels CoFe₂O₄ and FeFe₂O₄ respectively are

A. inverse and inverse

B. inverse and normal

C. normal and normal

D. normal and inverse

The arrangement of sulphur in zinc blende and wurtzite structures, respectively are

A. hexagonal close packing and cubic close packing

B. cubic close packing and hexagonal close packing

C. simple cubic packing in both the structures

D. hexagonal dose packing in both the structures

The point group of NSF₃ is

A. D_3d

B. C_3h

C. D_3h

D. C_3v