The correct Lewis structure of acetic acid is:

1.		2.
3.		4.	None of the above.

H₂ molecule on the basis of valence bond theory is formed due to:

1. Attractive forces being more than the repulsive forces.

2. Attractive forces being less than the repulsive forces.

3. No force of attraction.

4. Only repulsive force.

Hybridizations of C₁, and C₂ in the structure given below are

$1.<mspace\; width="1em"></mspace>{\mathrm{C}}_1=<mspace\; width="1em"></mspace>{\mathrm{sp}}^3<mspace\; width="1em"></mspace>,<mspace\; width="1em"></mspace>{\mathrm{C}}_2<mspace\; width="1em"></mspace>=<mspace\; width="1em"></mspace>{\mathrm{sp}}^2<mspace\; width="1em"></mspace>$

$2.<mspace\; width="1em"></mspace>{\mathrm{C}}_1<mspace\; width="1em"></mspace>=<mspace\; width="1em"></mspace>{\mathrm{sp}}^3<mspace\; width="1em"></mspace>,<mspace\; width="1em"></mspace>{\mathrm{C}}_2<mspace\; width="1em"></mspace>=<mspace\; width="1em"></mspace>{\mathrm{sp}}^3<mspace\; width="1em"></mspace>$

$3.<mspace\; width="1em"></mspace>{\mathrm{C}}_1<mspace\; width="1em"></mspace>=<mspace\; width="1em"></mspace>{\mathrm{sp}}^2<mspace\; width="1em"></mspace>,<mspace\; width="1em"></mspace>{\mathrm{C}}_2<mspace\; width="1em"></mspace>=<mspace\; width="1em"></mspace>{\mathrm{sp}}^2<mspace\; width="1em"></mspace>$

4. None of the above

The number of resonating structures exhibited by \(CO^{2-}_3\) ion are :

The condition(s) required for the linear combination of atomic orbital is :

The incorrect statement among the following is:

The significance of the octet rule is:

1. To determine the stability of atoms.
2. To find the hybridization of elements.
3. To calculate the number of lone pairs.
4. None of the above.

The relation between hydrogen bond and the van der Waals forces is: