When an electron is added, the ion is called?

Answer

anion

Explanation:

When an electron is added or gained, it forms a negative ion called the anion.

This makes it have more electron than the proton making it negatively charged .

Examples are chloride, bromide, fluoride which has minus 1 has their charge

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atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8