Question
How many unpaired electrons are present in $\mathrm{Ni}^{2-}$ ?(a) 8(b) $\underline{1}$(c) 2(d) 0
Step 1
So, its electronic configuration is $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^8$. Show more…
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