Question

How many s electron are there in Cu+.
(1)2 (2) 4 (3) 6 (4) 10
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Answer 1

Answer:

Explanation:

The valence shell of Cu is fourth shell. Thus all electrons except for electron in 4s sub shell are its core electrons.  Thus total core electrons are 2+2+6+2+6+10=28 electrons. Hence Cu 28 core electrons.

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