A) 13 electrons have spin in one direction and 16 electrons in other direction
B) 14 electrons have spin one direction and 15 electrons in other direction
C) one electron can have spin only in the clockwise direction
D) None of the above is correct
Correct Answer: B
Solution :
\[Cu\](Atomic no.\[=29\]) \[=1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},\,\,4{{s}^{1}}\] \[\because \]In an orbital the two electrons must have the opposite spin. \[\therefore \]In\[Cu\,\], \[14\] electrons have spin in one direction and \[15\] electrons in other direction.
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