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12 August, 09:32

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

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  1. 12 August, 09:36
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    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.
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