KewlKid123 KewlKid123

16-10-2018
Chemistry

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What element is represented by [tex]1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}[/tex]

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Harry108 Harry108

16-10-2018

Answer: CALCIUM

EXPLANATION:

Add up all the electrons and the total number of electrons will be equal to the atomic number. If we know the atomic number we can quickly look at the periodic table and tell which element it is.

See the pics, the atomic number is 20 and it is Ca (CALCIUM)

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