The change in the third ionization energy does not vary smoothly across the first transition series. Why? Please select all that apply.

Question

The change in the third ionization energy does not vary smoothly across the first transition series. Why?  Please select all that apply.

Accepted Answer

Manganese gains an electron which must be paired.

Accepted Answer

A paired electron is lost when iron is oxidised from 2+ to 3+

Accepted Answer

Manganese loses an unpaired electron when it is oxidised from 2+ to 3+.

Answer

Iron gains an electron which must be paired.

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