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How can you tell isotopes of the same element apart?

Kevin Sutter

in Chemistry

1 answer

1 answer

Daniel King on February 13, 2019

The answer is: the number of neutrons is different.The isotopes of a chemical element with the same atomic number but different mass number (different number of neutrons). For example, the hydrogen (H), in addition to deuterium (mass number 2) and tritium (mass number 3), has isotopes protium (mass number 1).The atomic number is unique and defines an element. The isotopes of an element have the same atomic number (same number of protons in the nucleus).The atomic number (Z) is the total number of protons and the mass number (A) is the total number of protons and neutrons in the nucleus.

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