The shape of $Xe{O}_2{F}_2$ molecule is:

(1) trigonal bipyramidal

(2) square planar

(3) tetrahedral 

(4) see-saw

How many number of water molecule (s) directly bonded to the metal centre in $CuS{O}_4 . 5H_{2}O$is

(1) 3

(2) 2

(3) 4

(4) 5

A molecule having the smallest bond angle among the following is :

The pair of species having identical shapes for molecules of both species is

1. CF${}_4$ SF${}_4$

2. XeF${}_2$ CO${}_2$

3. BF${}_3$ PCI${}_3$

4. PF${}_5$IF${}_5$

The correct order of bond angles (smallest first) in H₂S, NH₃, BF₃ and SiH₄ is 

1. H₂S < SiH₄ < NH₃  < BF₃

2. NH₃ < H₂S < SiH₄ < BF₃

3. H₂S < NH₃ < SiH₄ < BF₃

4. H₂S < NH₃ < BF₃ < SiH₄

The bond order in NO is 2.5 while that in NO${}^{+}$ is 3.

Which of the following statements is true for these

two species? 

1. bond length in NO${}^{+}$ is greater than in NO

2. bond length in NO is greater than in NO${}^{+}$

3. bond length in NO${}^{+}$ is equal than in NO

4. bond length is unpredictable

Which of the following has the regular tetrahedral structure

1. [Ni(CN${}_4$)]${}^{2-}$

2. SF${}_4$

3. ${{\mathrm{BF}}_4}^{-}$

4. XeF${}_4$

Which of the following types of hybridisation exhibits the highest number of 90° bond pair-bond pair electron angles?
 

1. ${\mathrm{sp}}^3{\mathrm{d}}^2$ hybridisation.

2. ${\mathrm{sp}}^3\mathrm{d}$ hybridisation.

3. ${\mathrm{sp}}^3$ hybridisation.

4. ${\mathrm{dsp}}^2$ hybridisation. 

Molecule/Ion that is diamagnetic in nature is: 

The extent of lattice energy in an ionic compound depends on:

1. Packing of ions only 

2. Size of the ions only 

3. Charge and Size of the ions 

4. Charge on the ions only