Single Choice

Which of the following is false regarding an isotope?

ASame atomic number
BDifferent number of neutrons
CSame mass number
Correct Answer
DSame number of the electrons

Solution

Isotopes are variants of a particular chemical element which differ in neutron number, although all isotopes of a given element have the same number of protons in each atom. They have same atomic number. The number of nucleons (both protons and neutrons) in the nucleus is the atom's mass number, and each isotope has a different mass number.


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