Questions
Chlorine, argon, potassium, calcium have numbers of electrons as 17, 18, 19, 20 respectively. Their nucleus contains 18, 22, 20, 20 neutrons respectively. The pair of isobars are
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Correct option is C
The elements Argon and Calcium contain same mass number but different atomic numbers. Hence they are set to be isobars.
Ex: . Number of neutrons should be different in isobars.
For Ca, number of neutrons n = 20; For Ar, number of neutrons n = 22.
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