Write the electronic configuration of any one pair of isotopes and isobar.

 Isotopes Atoms of the same element have the same atomic number but a different mass number.

Therefore,  Electronic configuration of   isotopes  remain the same :

E.G.,                    ¹²₆C             ¹⁴₆C   

Electronic         K   L           K     L

configuration   2  4              2    4

Isobar: Atoms of different elements with different atomic numbers but the same mass number

E.G.,                    ⁴⁰ ₂₀C         

Electronic         K   L    M     N                  K     L     M

configuration   2    8     8      2                   2      8      8                               

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Updated on: 14-Mar-2023

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