Molecular Orbital Theory

The number and type of bonds between two carbon atoms in calcium carbide are

The shape of an atomic orbital is determined by the type of the atomic orbital (s, p, d or f), while the shape of a molecular orbital is determined by the shapes of atomic orbitals that make the molecule.

Over lapping of $2\mathrm{p}$ orbitals of two atoms forms how many molecular orbitals between two atoms?

Which of the following are the molecular orbitals formed from the overlapping of $1\mathrm{s}$ atomic orbitals?

The energy level of an orbit is determined by the _____ value of that particular orbit.

Assertion. Molecular nitrogen is less reactive than molecular oxygen.

Reason. The bond length of ${\mathrm{N}}_2$ is shorter than that of oxygen

Assertion : ${\mathrm{H}}_2$ molecule is more stable than $\mathrm{HeH}$ molecule.

Reason : The anti bonding electron in the molecule destabilises it.

The bond formed in between boron atoms based on molecular orbital theory is 

The number of anti-bonding electrons in the beryllium molecule is

Shape of p_x-orbital and s-orbital is _____ respectively.

Atomic number of $\mathrm{Cr}, \mathrm{Fe}$ and $\mathrm{Co}$ are $24, 26$ and $27$ respectively. Which of the following inner orbital octahedral complexes are paramagnetic?

According to "Molecular orbital theory", which among the following diatomic molecules only has $\pi$-bonds?

How many nodes are there in the anti-bonding molecular orbital formed by two $2\mathrm{s}$ atomic orbitals?

In the molecular orbital diagram for the molecular ion ${\mathrm{N}}_2^{+}$ , the number of electrons in the ${\mathrm{\sigma }}_{2\mathrm{p}}$ molecular orbital is

Stability of the species  ${\text{Li}}_2\text{,}{\text{Li}}_2^{-}\text{and}{\text{Li}}_2^{+}$ increases in the order of

After understanding the assertion and reason, choose the correct option.

Assertion: In the bonding molecular orbital (MO) of ${\text{H}}_2,$ electron density is increased between the nuclei.
Reason: The bonding MO is ${\mathrm{\text{ψ}}}_{\mathrm{\text{A}}}+{\mathrm{\text{ψ}}}_{\mathrm{\text{B}}}$ , which shows destructive interference of the combining electron waves.

If an extra electron is added to the hypothetical molecule ${\mathrm{C}}_2,$ this extra electron will occupy the molecular orbital:-