Match List-I (Molecules) with List-II (Bond order),
and mark the appropriate choice

Choose the correct match from the options given below :

1. (a) $\to$ (iii), (b) $\to$ (iv), (c) $\to$ (i), (d) $\to$ (ii)

2. (a) $\to$ (i), (b) $\to$ (ii), (c) $\to$ (iii), (d) $\to$ (iv)

3. (a) $\to$ (ii), (b) $\to$ (i), (c) $\to$ (iv), (d) $\to$ (iii)

4. (a) $\to$ (iv), (b) $\to$ (iii), (c) $\to$ (ii), (d) $\to$ (i)

During the change of O₂ to $O_2^{-}$, the incoming electron that goes to the orbital is:

The molecules/ions that do not contain unpaired electrons among the following is:

1. $O_2^{2-}$

2. B₂

3. $N_2^{+}$

4. O₂

1. $N_2^{2-}$

2. O₂

3. $C_2^{2-}$

4. $O_2^{2-}$

Arrange the species \(\mathrm{Li}_2\) , \(\mathrm{Li}_2^{-}\) , and \(\mathrm{Li}_2^{+}\)  in order of increasing stability:

1. ${\mathrm{Li}}_2<{\mathrm{Li}}_2^{-}<{\mathrm{Li}}_2^{+}$

2. \(\mathrm{Li}_2^{-}\) = \(\mathrm{Li}_2^{+}\) = \(\mathrm{Li}_2\)

3. ${\mathrm{Li}}_2<{\mathrm{Li}}_2^{+}<{\mathrm{Li}}_2^{-}$

4. ${\mathrm{Li}}_2^{-}<{\mathrm{Li}}_2^{+}<{\mathrm{Li}}_2$

According to molecular orbital theory, which of the following molecules is not expected to be stable?

Of the species, NO , NO⁺, NO²⁺ and NO^– , the one with minimum bond strength is: 

1.  NO²⁺

2.  NO⁺

3.  NO 

4.  NO^–

Among the following, the molecule expected to be stabilized by anion formation is : C₂, O₂, NO, F₂

1. NO
2. O₂
3. C₂
4. F₂