In an element’s square on the periodic table, the number with the greatest value represents the

a: number of neutrons.
b: number of electrons.
c: atomic number.
d: atomic mass.

The correct answer is (D) atomic mass

You can find two numbers in an element's square on the periodic table, one is atomic number and other is atomic mass number. Atomic mass number is represented on the top of an element, atomic mass number is greater than the atomic number because atomic number is number of protons in the nucleus of an atom, while atomic mass number is number of protons plus number of neutrons in the nucleus of an atom.

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