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the electron configuration of nitrogen ...

the electron configuration of nitrogen is
`1s^(2) 2s^(2) 2p_(x)^(1)2p_(y)^(1) 2p_(z)^(1) ` instead of
`1s^(2) 2s^(2) 2p_(x)^(2) 2py^(1)` is decided by ..

A

Paulis principle

B

Aufbau principle

C

Hund.s rule

D

Ritz rule

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The correct Answer is:
C
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