VBT for Bonding in Coordination Compounds

The number of $\sigma$ bonds, $\mathrm{\pi }$ bonds and lone pair of electrons in pyridine, respectively.

Which one of the following statement is not correct for sigma-and pi-bonds formed between two carbon atoms?

The sum of number of sigma and pi bonds formed between two carbon atoms in $\mathrm{C}\mathrm{a}{\mathrm{C}}_2$ are:

Number and type of bonds between two carbon atoms in CaC2 are

The number of $\mathrm{\sigma }$ and $\mathrm{\pi }$ bonds in allyl isocyanide are

The total number of sigma and pi bonds present in the given anthracene molecule are:

How does oxygen molecule form?

Among the following, which has zero overlapping that leads to non-bonding?

Find out the axis in which nodal plane in the π-bond of ${\text{C}}_2{\mathrm{H}}_4$ is located. (inter-nuclear axis = Z)

In the resonating form of naphthalene molecule, how many sigma and pi bonds are present?

Overlapping leads to the formation of $\sigma$bonding molecular orbital in:

What is the sum of $\mathrm{P}-\mathrm{P}$ bonds and $\mathrm{P}-\mathrm{S}$ bonds in a molecule of ${\mathrm{P}}_4{\mathrm{S}}_3$?

The number of $\mathrm{\sigma }$- and$\mathrm{\pi }$- bonds in hexane$-2, 4-$dione, respectively are

The combination of orbital that cannot produce non-bonding molecular orbital is (if an inter-nuclear axis is $\mathrm{z}$-axis):

If $d_{xz}$ orbital of  $X$ and $p_x$ orbital of $Y$ from $\pi$ bond along a particular molecular axis, then which bond will be formed along same molecular axis by combination of $(d_{xy}+d_{xy})$ orbitals of $X$ and $Y$ atom.

Which of the following gives rise to the formation of bond?

In which of the following back-bonding is possible

When two atoms of hydrogen combine to form a molecule of hydrogen gas, the energy of the molecule is

Which one of the following does not exhibit paramagnetism?