Which of the following statements is not correct from the viewpoint of molecular orbital?

B e_{2}

is not a stable molecule.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

H e_{2}

is not stable but

H e_{2}^{+}

is expected to exist.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Bond strength of

N_{2}

is maximum amongst the homonuclear diatomic molecules belonging to the second period.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The order of energies of molecular orbitals in

F_{2}

molecule is

E (σ 2 s) < E (σ * 2 s) < E (π 2 p_{x}) = E (π 2 p_{y}) < E (σ 2 p) < E (π * 2 p_{x}) = E (π * 2 p_{y}) < E (σ * 2 p)

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is C The order of energies of molecular orbitals in $F_{2}$ molecule is $E (σ 2 s) < E (σ * 2 s) < E (π 2 p_{x}) = E (π 2 p_{y}) < E (σ 2 p) < E (π * 2 p_{x}) = E (π * 2 p_{y}) < E (σ * 2 p)$
The order of energies of molecular orbitals in $F_{2}$ molecule is:

$E (σ 2 s) < E (σ * 2 s) < E (σ 2 p) < E (π 2 p_{x}) = E (π 2 p_{y}) < E (π * 2 p_{x}) = E (π * 2 p_{y}) < E (σ * 2 p)$

The energy of $σ_{2 p}$ orbital is lower than the energy of $π_{2 p_{x}} a n d π_{2 p_{y}}$ orbitals.

Hence, the correct option is 'D'.

Suggest Corrections

Similar questions

Question 19

Which of the following statement is not correct from the view point molecular orbital theory?

(a) $B e_{2}$ is not a stable molecule

(b) $H e_{2}$ is not stable but $H e_{2}^{+}$ is expected to exist.

(d) The order of energies of molecular orbitals in $N_{2}$ molecule is

$σ 2 s < σ^{*} 2 s < σ 2 p_{z} < (π^{*} 2 p_{x} ≃ π^{*} 2 p_{y}) < σ^{*} 2 p_{z}$

Use molecular orbital theory to explain why the Be₂ molecule does not exist.

Join BYJU'S Learning Program