MCQ
Which is a pair of isotones?
- ✓${ }_{11} Na ^{23}$ and ${ }_{12} Mg ^{24}$
- B${ }_7 N^{15}$ and ${ }_7 N^{14}$
- C${ }_{17} Cl ^{35}$ and ${ }_{17} CP ^{37}$
- D${ }_{20} Ca ^{40}$ and ${ }_{18} Ar ^{40}$
✓
Answer
Correct option: A.
${ }_{11} Na ^{23}$ and ${ }_{12} Mg ^{24}$
A
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