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Chemistry Level 3

What is the magnetic nature and bond order of $\ce {B2}$ if 2s and 2p mixing is not allowed. Let it be $a$ & $b$ respectively.

What is the magnetic nature and bond order of $\ce {C2}$ if 2s and 2p mixing is not allowed. Let it be $c$ & $d$ respectively.

Take values as

Paramagnetic - 2

Diamagnetic - 3

Enter your answer as $a \times b + c \times d$ .

Details and Assumptions :

Magnetic nature is represented by values mentioned above(these values are not scientific it's only given to answer the question)

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This is a part of my set Aniket's Chemistry Challenges . (BEST OF JEE - ADVANCED)

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1 solution

Aniket Sanghi
Mar 21, 2016

If 2s and 2p mixing is not allowed then electronic configuration (molecular ) is used of that of >=14 electrons so by this B2 is diamagnetic with bond order 1....and C2 is paramagnetic with bond order 2

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I konw this fact and tried to find the reason behind it but did not get any satisfactory explanation... If u know why this happens please tell :)

Samarth Agarwal - 5 years, 2 months ago

Our sir says upon mixing of 2s and 2p the energy of sigma 2pz increases ,,hence the configure followed

Aniket Sanghi - 5 years, 2 months ago

He is actually asking why does the energy increase?

Saarthak Marathe - 5 years, 1 month ago

Can you explain what happens when 2s and 2p orbitals are mixed?

Anik Mandal - 5 years, 2 months ago

Our sir says upon mixing of 2s and 2p the energy of sigma 2pz increases ,,hence the configure followed

Aniket Sanghi - 5 years, 2 months ago

Do you know!

This is a part of my set Aniket's Chemistry Challenges . (BEST OF JEE - ADVANCED)

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