193213rockwise 193213rockwise

17-11-2017
Chemistry

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Which is the first element in the periodic table to have an electron configuration in the 4th energy level?

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betsabegomeez betsabegomeez

17-11-2017

The answer is potassium:)

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shayondowns shayondowns

17-12-2018

The answer is potassium .......

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