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Which amoung the following is/are same for each of C-12, C-13 and C-14? Atomic number Atomic mass Number of protons Number of neutrons

Which amoung the following is/are same for each of C-12, C-13 and C-14? Atomic number Atomic mass Number of protons Number of neutrons Correct Answer 1 and 3 only

An element's or isotope's atomic number tells how many protons are in its atoms.

An element's or isotope's mass number tells how many protons and neutrons in its atoms.

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