gurule359 gurule359

23-10-2018
Chemistry

contestada

a single atom of an element had 21 neutrons, and 20 electrons, and 20 protons which element is it ? K. Zr. Ca. Sc

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doublesgamer doublesgamer

23-10-2018

You element is calcium.

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AnikaMK AnikaMK

23-10-2018

The element is Calcium... Ca. A single atom of an element had 21 neutrons, and 20 electrons, and 20 protons is Calcium.

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