Which from following pairs is an example of isotones?
Which from following pairs is an example of isotones?
${ }_6^{12} \mathrm{C} ;{ }_6^{14} \mathrm{C}$
${ }_6^{12} \mathrm{C} ;{ }_5^{11} \mathrm{~B}$
${ }_6^{14} \mathrm{C} ;{ }_7^{14} \mathrm{~N}$
${ }_6^{13} \mathrm{C} ;{ }_5^{11} \mathrm{~B}$
Solution
The atoms of different elements having same number of neutrons in their nuclei are called isotones. Thus, ${ }_6^{12} \mathrm{C}$ and ${ }_5^{11} \mathrm{~B}$ are isotones.