Transition and InnerTransition Elements - Result Question 139

####39. How many unpaired electrons are present in $Ni^{2+}$ ?

(a) 0

(b) 2

(c) 4

(d) 8

$(1981,1 M)$

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Answer:

Correct Answer: 39. (b)

Solution:

  1. The valence shell electronic configuration of $Ni^{2+}$ is :

$[Ar]$

; two unpaired electrons



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