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Select the correct configurations among ...

Select the correct configurations among the following

A

`Cr(Z = 24):[Ar]3d^5, 4s^1`

B

`Cu(Z = 29): [Ar]3d^(10),4s^1`

C

The energy of an electron in an atomic orbital of multi-elelctron atom depends on principal quantum number only

D

`Pt(Z =78):[Xe]4d^(10)4s^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C

Pt(Z=78) , Valence E.C. `=5d^9 6s^1`
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