Question

There are two elements-calcium (atomic number 20) and argon (atomic number 18). The mass number of both the elements is 40. They are therefore known as
A) isotones B) isochores C) isobars D) isotopes

Answer 1

Answer:

C) Isobars

'Cause in Isobars Mass number is same even if the atomic number is different of two or more elements...

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