Question

Choose the correct pair of isotopes.

• A. ${}_2^{4}He$
• B. ${}_6^{12}C$
• C. ${}_6^{14}C$
• D. ${}_{53}^{127}I$
• E. ${}_{53}^{131}I$
• F. ${}_2^{3}He$
• G. ${}_1^{2}H$
• H. ${}_1^{1}H$

Answer 1

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