DadeO999 DadeO999

15-12-2020
Chemistry

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A single atom of an element has 21 neutrons, 20 electrons, and 20 protons, which elementis it?

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abigailgillman94 abigailgillman94

15-12-2020

Answer:

Calcium

Explanation:

The number of protons is the atomic number of the element. Number 20 on the periodic table is Calcium.

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