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Using the periodic table, explain the difference between hydrogen, deuterium, and tritium - i.e. hydrogen-1, hydrogen-2, and hydrogen-3.

A) Allotropes vary in their number of protons - so they contain 1, 2, and 3 protons, respectively.
B) The atoms deviate in their number of photons - so they contain 1, 2, and 3 photons, respectively.
C) Isotopes differ only in their number of neutrons - so they contain 0, 1, and 2 neutrons, respectively.
D) These configurations diverge in their number of electrons - so they contain 1, 2, and 3 electrons, respectively.

1 Answer

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The ans is C

Isotopes have the same number of protons but different number of neutrons.
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