A) \[N{{i}^{++}}\]
B) \[C{{u}^{+}}\]
C) \[Z{{n}^{++}}\]
D) \[S{{c}^{+++}}\]
Correct Answer: A
Solution :
Elements or ions containing unpaired electrons are paramagnetic. \[_{28}Ni=[Ar]\ 3{{d}^{8}}4s_{2}^{{}}\] ; \[N{{i}^{2+}}=[Ar]\ 3{{d}^{8}}4{{s}^{0}}\] \[N{{i}^{2+}}\]Stage Because \[N{{i}^{2+}}\] have 2 unpaired electrons in 3d subshell therefore it is paramagnetic.You need to login to perform this action.
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