Incorrect statement about resonance is :

1. The resonating structures are hypothetical.

2. The unpaired electrons in various resonating structures are same.

3. Hybrid structure is most energetic.

4. Hybrid structure is least energetic.

Which of the following species deviates from the octet rule?

1. $C{O}_3^{2-}$

2. $H_{2}S{O}_3$

3. $PC{l}_3$

4. $O_3$

 A bent T-shape molecule among the following is:

1. \(\mathrm{ICl}^-_4\)
2. \(\mathrm{PCl}_3\)
3. \(\mathrm{BrF}_3\)
4. \(\mathrm{I}^-_3\)

Orbital that is used by oxygen atom to form sigma bond with other oxygen atom in $O_2$ molecule is :

1. Pure p-orbital.

2. $s{p}^2-hybrid<mspace\; width="1em"></mspace>orbital$.

3. $s{p}^3$-hybrid orbital.

4. sp-hybrid orbital.

The geometry and the dipole moment of ${\mathrm{H}}_2\mathrm{S}$ is:

Match the oxide given in Column-I with its property given in Column-II:

Which of the following options is correct?

Which of the following is a paramagnetic compound?

1. ${\mathrm{N}}_2$

2. ${\mathrm{H}}_2$

3. ${\mathrm{Li}}_2$

4. ${\mathrm{O}}_2$

Arrange the following species in increasing order of their dipole moments:
NH₃,NF₃,BF₃,H₂O
 

1. $N{H}_3<B{F}_3<N{F}_3<H_{2}O$

2. $B{F}_3<N{F}_3<N{H}_3<H_{2}O$

3. $B{F}_3<N{H}_3<N{F}_3<H_{2}O$

4. $H_{2}O<N{F}_3<N{H}_3<B{F}_3$

The number of hydrogen bonded water molecules(s) associated with \(\mathrm{C u S O_{4} . 5 H_{2} O}\) is:

Which of the following atomic orbitals would have the greatest overlap to form the strongest covalent bond?