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What can we tell from the column that an element is in?

The year the element was discovered

The number of protons in the nucleus

The number of electrons in the outer energy level

The mass of the atom

Respuesta :

Onoriodefelix

Answer:

The number of electrons in the outer energy level

Explanation:

MarkLemley

Answer:

The number of electrons in the outer energy level.

Explanation:

I took the test.

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