1.

The atomic number of Ni and Cu are 28 and 29 respectively. The electronic configuration 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10) represents

Answer»

`Cu^(+)`
`Cu^(2+)`
`Ni^(2+)`
Ni

Solution :ELECTRONIC CONFIGURATIONS of :
`Ni-[AR]3d^(8)4s^(2), "" Ni^(2+)-[Ar]3d^(8)`
`Cu-[Ar]3d^(10)4s^(1), ""Cu^(+)-[Ar]3d^(10)`
`Cu^(2+)-[Ar]3d^(9)`


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