Argon has atomic number of 18 and mass number of 40 calcium has atomic 20 and mass number 40 calcium and argon are examples of ------


Atoms of different elements with different atomic numbers and the same mass number are known as isobars.

  • Isobars are defined as the atoms that have the same number of nucleons.
  • Isobars of different chemical elements have different atomic number but have the same mass number.
  • The pair has the same atomic mass which is 40 and different atomic number 20 and 18 respectively.


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