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


Answer :

(a) Isotopes: Isotopes are atoms which have the same number of protons but different number of neutrons. They have same atomic number but different mass number.

Example: Carbon molecule exists as 6C12 and 6C14 but when their electronic configuration is K-2; L-4

(b) Isobars: Isobars are atoms which have the same mass number but different atomic number.

Example: Electronic configuration of 20Ca40is – K-2; L-8; M-8; N- 2 and of 18Ar40 is – K-2; L-8; M-8

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