A) Aufbau principle
B) Faults exclusion principle
C) Hunds rule
D) Heisenbergs principle
Correct Answer: C
Solution :
The presence of unpaired electron in phosphorus atom is explained by Hunds rule, which states that Pairing of electrons in\[d\]and\[f-\]orbitals cant occur until each orbital of a given subshell contains one electron or is singly occupied \[_{15}P:1{{s}^{2}},\,\,2{{s}^{2}},\,\,2{{p}^{6}},\,\,3{{s}^{2}},\,\,3p_{x}^{1},\,\,3p_{y}^{1},\,\,3p_{z}^{1}\]You need to login to perform this action.
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