Which molecules/ions are most paramagnetic?

1. B₂

2. C₂

3. $O_2^{+}$

4. $O_2^{-}$

The favourable conditions for the formation of electrovalency is

1. Small cation and small anion

2. Large cation and small anion

3. Small cation and large anion

4. Large cation and large anion

The correct statement is-

1. When O₂ is converted into $O_2^{+}$ then bond distance increases

2. When N₂ is converted into $N_2^{+}$ then bond distance increases

3. When CO is converted into CO⁺ then bond distance increases

4. All of the above

Which has highest bond energy?

1. CO

2. CO⁺

3. N₂

4. $N_2^{+}$

In which case observed dipole moment is greater than theoretical dipole moment?

1. 

2. 

3. 

4. 

Which has linear shape but not sp hybridisation?

1. XeF₂

2. $I_3^{-}$

3. CO₂

4. Both 1 and 2

Decreasing order of stability of ${\mathrm{O}}_2,{\mathrm{O}}_2^{-},{\mathrm{O}}_2^{+} \mathrm{and} {\mathrm{O}}_2^{2-}$is:

1. $O_2^{+}>O_2>O_2^{-}>O_2^{2-}$

2. $O_2^{2-}>O_2^{-}>O_2>O_2^{+}$

3. $O_2>O_2^{+}>O_2^{2-}>O_2^{-}$

4. $O_2^{-}>O_2^{2-}>O_2^{+}>O_2$

Which one of the following pairs is iso-structural?
(i.e., having the same shape and hybridization)

1. $[BC{l}_3 and BrC{l}_3]$

2. $[N{H}_3 and N{O}_3^{-}]$

3. $[N{F}_3 and B{F}_3]$

4. $[B{F}_4^{-} and N{H}_4^{+}]$

In which of the following molecules are all the bonds not equal?

1. $Cl{F}_3$

2. $B{F}_3$

3. $Al{F}_3$

4. $N{F}_3$

Consider the following structures :

1. ${\mathrm{\theta }}_1>{\mathrm{\theta }}_2>{\mathrm{\theta }}_3>{\mathrm{\theta }}_4$

2 ${\mathrm{\theta }}_1>{\mathrm{\theta }}_3>{\mathrm{\theta }}_4>{\mathrm{\theta }}_2$

3. ${\mathrm{\theta }}_3>{\mathrm{\theta }}_1>{\mathrm{\theta }}_2>{\mathrm{\theta }}_4$

4. ${\mathrm{\theta }}_1>{\mathrm{\theta }}_3>{\mathrm{\theta }}_2>{\mathrm{\theta }}_4$