Question

Atoms,which are always neutral in electric charge, contain electrons as well as protons and neutrons. An electron has an electrical charge of -1. If an atom has three electrons, infer how many protons it has.

Answer 1

Answer:

3

Explanation:

Since the atom has three electrons, it has a -3 electrical charge. Since atoms are neutral, 3 protons are needed to get the charge back to 0.

Answer 2

The number of protons in the atom having 3 electrons is 3

From the question given above, the following data were obtained:

Electron = 3

Charge = 0

Proton =?

The number of protons in the atom can be obtained as illustrated below:

Charge = Proton – Electron

0 = Proton – 3

Collect like terms

0 + 3 = Proton

Proton = 3

Therefore, the atom has 3 protons.

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