What is atomic number and atomic …
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Kritika Trehan 8 years ago
the number of protons in an atom is called the atomic number. In contrast, the number of neutrons for a given element can vary. Forms of the same atom that differ only in their number of neutrons are called isotopes. Together, the number of protons and the number of neutrons determine an element’s mass number: mass number = protons + neutrons.
Themass number of an atom is the total number of protons and neutrons it contains.
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