elviae34 elviae34

06-06-2018
Chemistry

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

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SINAZEUS SINAZEUS

06-06-2018

it is Calcium (Ca)

good luck

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blacknightmare3 blacknightmare3

06-06-2018

calcium is the element. the number of protons is the atomic number therefore that would be your element

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