A single atom of an element has 21 neutrons 20 electrons and 20 protons which element is it

asked Jun 2, 2020 178k views

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5 votes

Answer:

Step-by-step explanation:

The answer above me

Manuel Jacob answered Jun 4, 2020

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2 votes

Calcium because the number of protons is the number of the element on the periodic table

Yadu answered Jun 8, 2020

by Yadu

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