Question

A and B are atoms isobars with different atomic numbers. atomic numbers of A is 18 and the atomic mass of B is 40.calculate the number of protons, electrons and neutrons of an atom is _____​

Answer 1

Explanation:

A (Argon)

atomic number= 18

proton=18

electron=18

neutron =40-18(A-p)

neutron=22

Isobars means same mass number.

B (Calcium)

atomic number= 20

proton=20

electron=20

neutron =40-20(A-p)

neutron=20