Why does manganese, atomic number 25, have a less favorable e ea than its neighbors on either side?

This is actually a result from managese’s electron configuration. It has three 5d electrons, so one electron can go into each of the 5 d orbitals unpaired. However when adding another electron into the orbital, we are Starting to pair previously unpaired electrons. This pairing is accompanied by a small energy barrier which makes it less affinity

it takes on an electronical energy

your answer is c) plasma

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