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InterviewSolution
| 1. |
State hund s rule |
| Answer» It states that pairing of e- in an orbital of a particular subshell (s,p,d,f) doesn\'t take part until all the orbital of subshell are singly occupied<br>Hund’s rule states that electron pairing in p, d and f orbitals cannot occur until each orbital of a given subshell contains one electron each or is singly occupied. Hence it accounts for the maximum number of unpaired electron and thus maximum electron spin (electron spin is ½ for each single electron).For eg oxygen has configuration 1s^2 , 2s^2 , 2p^4 therefore in p subshell firstly each orbital will b filled n thn the pairing first 2p orbital will start | |