Question

state briefly Hunds rule ​

Answer 1

Answer:

Hund's rule: every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.

Explanation:

Hund's rule states that orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron and that each of the single electrons must have the same spin. The Figure below shows how a set of three p orbitals is filled with one, two, three, and four electrons.

Answer 2

According to this rule electron pairing in orbitals starts only when all available empty orbitals of the same energy (degenerate orbitals) are singly occupied.

The configuration of Carbon (C) atom (2=6) is 1s² 2s²2p². The first four electrons go into the Is and 2s orbitals. The next two electrons go into separate 2p orbitals, with both electrons having the same spin

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