KSA Science Grade 11 Practice Questions - Kentucky Summative Assessment Science - Grade 11 Exam

Which fundamental property of an atom determines its identity as a specific chemical element on the periodic table?

The number of protons in its nucleus The total number of neutrons in its nucleus The total number of valence electrons in its outer shell The total mass of its combined protons and neutrons

Correct Answer:

The number of protons in its nucleus

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