1. Tardigrade
  2. Question
  3. Chemistry
  4. The increasing order of energies of various molecular orbitals of N2 is given below: σ 1s < σ* 1s <σ 2 s <σ* 2 s < π 2 px = π 2 p y < σ 2 pz < π* 2px = π* 2py < σ* 2pz The above sequence is not true for the molecule

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Q. The increasing order of energies of various molecular orbitals of $N_2$ is given below:
$\sigma 1s < \sigma^* 1s <\sigma 2 s <\sigma^* 2 s < \pi 2 p_{x} $
$= \pi 2 p _{y} < \sigma 2 p_{z} < \pi^* 2p_{x} = \pi^* 2p_{y} < \sigma^* 2p_{z}$
The above sequence is not true for the molecule

Chemical Bonding and Molecular Structure

Solution:

For all elements which have atomic number more than $7$ (beyond nitrogen) the energy of $\sigma 2p_z$ is lower than $\pi 2p_x$ and $\pi 2p_y$ -orbitals.