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Carbon contains six electrons and has a mass number of 12. How many neutrons does it contain?

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Answer:

6 Neutrons

Step-by-step explanation:

The number of Protons/Electrons (Protons and electrons are proportional to each other), added with the number of the neutrons that the atom has always equals the mass of the atom.

This claim can be represented with this formula

Protons/Electrons + Neutrons = Atomic Mass

Electrons = 6
Atomic Mass = 12

6(Electrons) + Neutrons = 12(Atomic Mass)
Neutrons = 12 - 6
Neutrons = 6

Therefore, the amount of Neutrons in a carbon molecule are 6

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