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Question
Q85) Consider the electron configuration 1s
2
2s
2
2p
x
2
a)It violates Aufbau principle
b) It violets Hund's rule
c)It violates Pauli's exclusion principle
d)It is correct
SOLUTION
According to Hund's rule 2 electron should be in p
x
and p
y
each
Answer: (b)