Question

O2 is paramagnetic where as N2 is diamagnetic why give reason for your answer

Answer 1

Answer:

Due to their electron configuration difference, O2 is paramagnetic and N2 is diamagnetic.

Explanation:

Electron configuration of O2: σ1s2, σ*1s2, σ2s2, σ*2s2, σ2px2, {π2py2, π2pz2},{π*2py1, π*2pz1}

• The electron configuration of O2 indicates that it has two unpaired electrons.

Electron configuration of N2: σ1s2, σ*1s2, σ2s2, σ*2s2, {π2py2, π2pz2}, σ2px2

• While, electron configuration of N2 indicates that it's all electrons are paired.

Why O2 is paramagnetic?

• In O2, electrons are arranged in random positions and when we apply electric field to this random electrons, these electrons which act as tiny magnets aligned to same direction.
• Which induces magnetic field in direction of applied field.
• Hence O2 molecules become attractive to this magnetic field.
• This type of magnetic action is called Para-magnetism.

Why N2 is Diamagnetic?

• In N2, all electrons are paired and so half of the electrons spin clockwise and other half of the spin in anticlockwise.
• So, there resultant magnetic field becomes zero.
• When N2 molecule placed in an external field, they produce magnetic field in opposite direction so they repel the magnetic field.
• This type of magnetism is called Diamagnetism.

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