How many d electron are present in cu2+ ion?

1 Answer
Junaid Mirza
May 13, 2018

#9# d-electrons

Explanation:

Electronic configuration of #""_29"Cu"# is

#"1s"^2\ "2s"^2\ "2p"^6\ "3s"^2\ "3p"^6\ "4s"^2\ "3d"^9#

Electrons are removed from outermost shell first. So, electronic configuration of #""_29"Cu"^"2+"# is

#"1s"^2\ "2s"^2\ "2p"^6\ "3s"^2\ "3p"^6\ "4s"^0\ "3d"^9#

Number of #"d"#-electrons#= 9#

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