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In Cu (atomic number = 29)
Option: 1
13 electrons have spin in one direction and 16 electrons in other direction
Option: 2
14 electrons have spin in one direction and 15 electrons in other direction
Option: 3
One electron can have spin only in the clockwise direction
Option: 4
None of these
Answers (1)
As we learn
Stability of completely Filled Subshells of Cu -
The valence electronic configurations of Cu is 3d10 4 s1 respectively and not 3d9 4s2.
-
Cu (29) = [Ar]18.3d10.4s1
All electrons are paired except 4s1. Hence 14 electrons have spin in one direction and 15 electrons in other.
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