Q. The triad of nuclei which is isotonic is
A) $\ _{6}^{14}C,_{7}^{14}N,_{9}^{17}F$
B) $\ _{6}^{14}C,_{7}^{14}N,_{9}^{19}F$
C) $\ _{6}^{14}C,_{7}^{15}N,_{9}^{17}F$
D) $\ _{6}^{12}C,_{7}^{14}N,_{9}^{19}F$
Explanation
(c)
Isotonic species are those species which have equal number of neutrons,
e.g$.,\ \ _{\ \ 6}^{14}C,_{\ \ 7}^{15}N\ and\ \ _{\ \ 9}^{17}F.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.