Q. 74.1( 12 Votes )

Which part of the solar
Identify the pair of isotopes from the following:

168X, 167X, 178X,

Answer :

168X, 178X are a pair of isotopes as they have a same atomic number but a different mass number.

Here 8 is the atomic number and 16, 17 are a mass number which is different so these are isotopes.

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