Which 2 + ion has two 3d electrons? which has eight 3d electrons?

Question

Chemistry

Kaila Stevenson

11 January, 13:16

Which 2 + ion has two 3d electrons? which has eight 3d electrons?

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Answers (1)

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Miriam · Answer 1

1) Titanium cation has two 3d electrons.

₂₂Ti 1s²2s²2p⁶3s²3p⁶3d²4s².

₂₂Ti²⁺1s²2s²2p⁶3s²3p⁶3d²4s⁰.

2) Nickel cations has eight 3d electrons.

₂₈Ni 1s²2s²2p⁶3s²3p⁶3d⁸4s².

₂₈Ni²⁺ 1s²2s²2p⁶3s²3p⁶3d⁸4s⁰.

Both cations (titanium and zinc) lost two electrons from 4s orbital, because 4s orbital is far away from nucleus.