Question

${}_{17}{}^{35}\mathrm{Cl}$ is ____ abundant than ${}_{17}{}^{37}\mathrm{Cl}$ isotope.

Answer 1

Isotopes of chlorine:

• Chlorine has two isotopes chlorine-35 and chlorine-37.
• The abundance of Cl-35 is 75% and that of Cl-37 is 25%.
• Hence the abundance of Cl-35 is more than that of Cl-37

Therefore, ${}_{17}{}^{35}\mathrm{Cl}$ is more abundant than ${}_{17}{}^{37}\mathrm{Cl}$ isotope.