Physical Chemistry> why are half filled d orbitals more stabl...

why are half filled d orbitals more stable?

sagar , 10 Years ago

Grade 12th pass

3 Answers

Avinash

The exactly half-filled and fully filled orbitals have greater stability than other configurations.
The reason for their stability are symmetry and exchange energy.
(a).Symmetry
The half-filled and fully-filled orbitals are more symmetrical than any other configuration and symmetry leads to greater stability.
(b). Exchange Energy

The electrons present in the different orbitals of the same sub-shell can exchange their positions. Each such exchange leads to the decrease in energy known asExchange Energy. Greater the number of exchanges, greater the exchange energy and hence greater the stability. As the number of exchanges that take place in the half-filled and fully-filled orbitals is maximum, thus exchange energy is maximum and hence maximum stability.

Last Activity: 10 Years ago

Sourav Singh

There can't be a better answer than this

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Last Activity: 7 Years ago

Kushagra Madhukar

Hello student
The reason behind this stability can be understood by the symmetry observed in case of Half filled d orbitals.
Along with this, the exchange energy of the half filled orbitals is high as the number of exchanges of electrons taking place in case of half filled d orbital is high due to which lowering of total energy takes place which increases the stability of half filled orbitals.

Hope it helps

Regards,

Kushagra

Last Activity: 5 Years ago