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STD 11 - 2. structure of atom — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 2. structure of atom4 Marks
MCQ
Phosphorous is having three unpaired electrons according to
  • ✓
    Hund’s rule
  • B
    Aufbau principle
  • C
    Pauli’s exclusion principle
  • D
    Heisenberg’s principle
✓

Answer

Correct option: A.
Hund’s rule
a
The presence of three unpaired in Nitrogen can be explained by Hund rule. Since, the outermost shell is the $P$ shell and $P$ shell has $3$ orbitals each of these orbitals can accommodate $2$ electron. Then each of these $3$ electron occupies one orbital and remain unpaired.

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