Which of the following pairs are isobars?
University of Ilorin CHM101 2025A past question
- ¹⁴C and ¹⁴N
- ⁴⁰Ca and ⁴⁰Ar
- ³⁹K and ⁴⁰Ca
- ¹⁶O and ¹⁸O
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