Incomplete Octet

Q. The electronic configuration $\left[Kr\right]4d^{10}$ represents ____
($Z$ for$Sr=38$, $Sn=50$, $Te=52$, $Ag=47$)

1. $S{r}^{2+}$
2. $S{n}^{2+}$
3. $T{e}^{2+}$
4. $A{g}^{+}$

Q. The electron deficient compound that has 3c - 2e bond among the following:

1. $B_2{H}_6$
2. $A{l}_{2}C{l}_6$
3. $BeC{l}_2$ polymer
4. All of the above

Q. The number of paired and unpaired electrons in the valence shell of sulphur is:

1. 2, 2
2. 4, 2
3. 2, 4
4. 0, 6

Q. Which one of the following is the electron deficient compound?

1. $ICl$
2. $N{H}_3$
3. $BC{l}_3$
4. $PC{l}_3$

Q. Which of the following is not hypovalent but complete its octet?

1. $AlC{l}_3$
2. $AlB{r}_3$
3. $Al{F}_3$
4. $B{F}_3$

Q. The electronic configuration $\left[Kr\right]4d^{10}$ represents ____
($Z$ for$Sr=38$, $Sn=50$, $Te=52$, $Ag=47$)

1. $S{r}^{2+}$
2. $S{n}^{2+}$
3. $T{e}^{2+}$
4. $A{g}^{+}$

Q. The number of paired and unpaired electrons in the valence shell of sulphur is:

1. 2, 2
2. 4, 2
3. 2, 4
4. 0, 6

Q. An ionic compound AB is most likely to be formed when:

1. The ionisation energy of A is high and electron affinity of B is low
2. The ionisation energy of A is low and electron affinity of B is high
3. Both, the ionisation energy of A and electron affinity of B are high
4. Both, the ionisation energy of A and electron affinity of B are low