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Write down the electronic configurations...

Write down the electronic configurations of :
`{:((a) Cr^(3+), (b) Pm^(3+),(c) Cu^(+)),((d) Ce^(4+), (e)Co^(2+), (f) Lu^(2+)),((g)Mn^(2+), (h) Th^(4+),):}`

Text Solution

Verified by Experts

(a) `Cr^(3+)= [Ar]_(18)3d^(3)`
(b) `Pm^(3+)= [Xe]_[54]3f^(5)`
(c) `Cu^(+)[Ar]_(18)3d^(10)`
(d) `Ce^(4+)[Xe]_[54]`
(e)`Co^(2+)[Ar]_(18)3d^(7)`
(f) `Lu^(2+)[Xe]_[54]4f^(14)5d^(1)`
(g)`Mn^(2+)= [Ar]_(18)3d^(3)`
(h) `Th^(4+)= [Rn]_(86)`
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