An isostructural compound with XeF₂  among the following  is :
1. ICl₂^–
2. SbCl₃
3. BaCl₂
4. TeF₂

Isostructural pair among the following is:

1. ${\mathrm{BCl}}_3$ $\mathrm{and}$ ${\mathrm{BrCl}}_3$

2. ${\mathrm{NH}}_3$ $\mathrm{and}$ ${\mathrm{NO}}_3^{-}$

3. ${\mathrm{NF}}_3$ $\mathrm{and}$ ${\mathrm{BF}}_3$

4. ${\mathrm{BF}}_4^{-}$ $\mathrm{and}$ ${\mathrm{NH}}_4^{+}$

The bond order of 1.5 is shown by:  

Identify the wrong statement among the following.

Which of the following species contains three bond pairs and one lone pair around the central atom?

1. $H_{2}O$

2. $B{F}_3$

3. $N{H^{-}}_2$

4. $PC{l}_3$

The pair of species with the same bond order is:

1. $O_2^{2-},$ $B_2$

2. $O_2^{+},\mathrm{ N}{O}^{+}$

3. NO, CO

4. $N_2,O_2$

Which of the two ions from the list given below have the geometry that is explained by the same hybridisation of orbitals, ${\mathrm{NO}}_2^{-},{\mathrm{NO}}_3^{-},{\mathrm{NH}}_2^{-},{\mathrm{NH}}_4^{-},{\mathrm{SCN}}^{-}$ ?

1.  ${\mathrm{NH}}_4^{-}$ $\mathrm{and}$ ${\mathrm{NO}}_3^{-}$

2.  ${\mathrm{SCN}}_{}^{-}$ $\mathrm{and}$ ${\mathrm{NH}}_2^{-}$

3.  ${\mathrm{NO}}_2^{-}$ $\mathrm{and}$ ${\mathrm{NH}}_2^{-}$

4.  ${\mathrm{NO}}_2^{-}$ $\mathrm{and}$ ${\mathrm{NO}}_3^{-}$

Which of the following has the minimum bond length?

1.  ${\mathrm{O}}_2^{-}$

2.  ${\mathrm{O}}_2^{2-}$

3.  ${\mathrm{O}}_2$

4.  ${\mathrm{O}}_2^{+}$

Which one of the following bonds produces a solid that reflects light in the visible region and whose electrical conductivity decreases with temperature and has a high melting point?

1. Metallic bonding

2. Van der Waals' bonding

3. Ionic bonding

4. Covalent bonding