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Q. The maximum number of 2p electrons with electronic spin $=-\frac{1}{2}$ are

WBJEEWBJEE 2016

Solution:

Electronic configuration of 2p level
Number of electrons with clock wise spin $m_{s}=+1/2\,\, is =3$
Number of electrons with anticlockwise spin $m_{s}=-1/2\, is =3$
$\therefore $ Maximum number of electrons with spin $m_{s} =-1/2\,\, is\, 3$

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