
Concept explainers
Interpretation:
The meaning of an element consisting of several isotopes needs to be explained.
Concept introduction:
The smallest unit of matter is atom. It consists of three subatomic particles neutrons protons, and electrons.
The isotope contains different numbers of neutron and same number of protons so the

Answer to Problem 23A
An atom having different number of neutrons and same number protons in its nucleus is termed as isotopes of the element.
Explanation of Solution
The number of protons in an atom is called the
MASS NUMBER = NUMBER OF PROPTONS + NUMBER OF NEUTRONS.
The number of neutron is different for
Chapter 3 Solutions
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