Question

8. Explain with examples
(1) Atomic number.
(2) Mass number,
(3) Isotopes
(4) Isobars.
Give any two uses of isotopes.​

Answer 1

Answer:

1 atomic number is the number of protons present in the nucleus of an atom

2. The mass number of an atom is its total number of protons and neutrons

3. Isotopes are variants of a particular chemical element which differ in neutron number, and consequently in nucleon number. All isotopes of a given element have the same number of protons but different numbers of neutrons in each atom.

4.Isobars are atoms of different chemical elements that have the same number of nucleons. Correspondingly, isobars differ in atomic number but have the same mass number. An example of a series of isobars would be ⁴⁰S, ⁴⁰Cl, ⁴⁰Ar, ⁴⁰K, and ⁴⁰Ca.

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