The term symbol that is NOT allowed for the np² configuration is · ABC26IN1042
Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Term Symbols Spectra · Exam: CSIR NET JUNE 2014 · Marks: 2 · Difficulty: Easy
The term symbol that is NOT allowed for the $np^{2}$ configuration is
(a)$^{1}D$
(b)$^{3}P$
(c)$^{1}S$
(d)$^{3}D$
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
np² allows only ¹S, ³P and ¹D; ³D would violate the Pauli principle.
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