How are two atoms of the same element alike?

1 Answer
anor277
Jan 28, 2017

They contain the same number of protons..............

Explanation:

They contain the same number of protons, positively charged, massive, nuclear particles. This definition allows for the existence of isotopes, whose atoms contain the same number of protons (and must do because they are isotopes of the same element), but DIFFERENT numbers of neutrons, neutrally charged, massive nucular particles.

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