Question

calculate the number of unpaired e- in CR+3 ​

Answer 1

calculate the number of unpaired e- in CR+3 ​??

Here is your answer

$Cr^{+3} >>> 1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{0} 3d^{3}$

in $Cr^{+3} ,3e^{-}  are$ unpaired

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Answer 2

Answer:

3

Explanation:

cr +3 has 21 electrons its stable configuration is 1s 2 2s 2 26 6 3s2 3p6 4s1 3d 5 so it first loses 1 electron from its outer most valence shell?4s 1/ and it will have 1s 2 2s 2 26 6 3s2 3p6 3d 5 the other two electrons are lost from the 3d.hence it has 3 unpaired electrons in the 3d.