Identify the pairs which are not of isotopes?

 

 

Explanation: Isotopes have the same atomic number and this rule is not followed in Option c and d thus they are not isotopes.

  1. Class 9
  2. Chapter 3 Class 9 - Atoms And Molecules (Term 2)

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo