why r half filled orbitals more stable?

Question

anonymous · Answer

you mean completely half-filled?

anonymous · Answer

well,partially!

anonymous · Answer

I think she's referring to an orbital filled with the same spin electrons, i.e. a fully unpaired orbital.

anonymous · Answer

due to having more unpaired electron 
for an example =when we human cant share the room with some one so y these electron do so they also like to be single they dont, want to adjust so by giving more energy only then they will .. like in humans we adjust only by giving conditions...

anonymous · Answer

can anyone eeplain to me properlyy!plzzz

anonymous · Answer

Half filled orbitals are more stable than partially filled orbitals because exchange energy (energy due to exchange electrons between two unpaired shells) is the greatest for half filled orbitals.

anonymous · Answer

the above answer is a good one ! lakshmi mam told the same ! =P btw i dont know what is exchange energy !

anonymous · Answer

In an atom, the electrons present in various orbitals of the same subshell tend to exchange their positions which is associated with very small amount of energy. Half-filled and completely filled subshell configurations allow maximum exchange of electrons to take place. Therefore, such configurations have maximum stability e.g., molybdenum (half-filled '4d' orbitals) and silver (completely filled '4d' orbitals).

anonymous · Answer

thanks ! =)