Atomic Structure Question 254

Question: The electronic configuration of an element with atomic number 7 i.e. nitrogen atom is [CPMT 1982, 84, 87]

Options:

A) 1s2,2s1,2px3

B) 1s2,2s22px22py1

C) 1s2,2s22px12py12pz1

D) 1s2,2s22px12py2

Show Answer

Answer:

Correct Answer: C

Solution:

7N=1s2,2s22px1,,2py1,,2pz1 . Hund-s rule states that pairing of electrons in the orbitals of a subshell (orbitals of equal energy) starts when each of them is singly filled.



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