Question

why are isotopes and isobars

Answer 1

Hi there !!!

Isotopes are actually the atoms which are of a same element .
The specialty of is that the isotopes have same atomic number , but at the same have different mass number.

The atomic number of an element = no: of protons in that element

Mass number = protons + neutrons in an atom

Example of isotope :

<> Isotopes of Chlorine with atomic number of both the isotopes as 17.
The difference between them is that of their mass number

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Isobars on the other hand are opposite to isotopes.

Isobars have different atomic numbers and same mass numbers.

Example of isobars :

Calcium and Argon are isobars.

Calcium and Argon have same mass numbers as 40 .

But , the atomic no: of calcium is 20 , whereas atomic number of argon is 18.