Question

How two isotopes of chlorine differ?

Answer 1

Isotopes:

1. Different forms of an element having same atomic number but different mass number.
2. They have equal number of protons.
3. Number of neutrons is different in isotopes.
4. They have similar chemical properties but different physical properties.
5. Example : ${}_6{}^{12}\mathrm{C}\mathrm{and}{}_6{}^{13}\mathrm{C}\mathrm{are}\mathrm{the}\mathrm{isotopes}\mathrm{of}\mathrm{carbon}.$

$$\begin{gathered} \mathrm{Two}\mathrm{isotopes}\mathrm{of}\mathrm{chlorine}\mathrm{are}: \\ {}_{17}{}^{35}\mathrm{Cl}\mathrm{and}{}_{17}{}^{37}\mathrm{Cl} \\ \mathrm{They}\mathrm{both}\mathrm{differ}\mathrm{from}\mathrm{each}\mathrm{other}\mathrm{because}{}_{17}{}^{35}\mathrm{Cl}\mathrm{have}17\mathrm{protons}\mathrm{and}18\mathrm{neutrons}.\mathrm{But}{}_{17}{}^{37}\mathrm{Cl}\mathrm{have}17\mathrm{protons}\mathrm{and}20\mathrm{neutrons}. \\ \mathit{H}\mathit{e}\mathit{n}\mathit{c}\mathit{e}\mathit{,}\mathit{}\mathit{b}\mathit{o}\mathit{t}\mathit{h}\mathit{}\mathit{t}\mathit{h}\mathit{e}\mathit{}\mathit{i}\mathit{s}\mathit{o}\mathit{t}\mathit{o}\mathit{p}\mathit{e}\mathit{s}\mathit{}\mathit{o}\mathit{f}\mathit{}\mathit{c}\mathit{h}\mathit{l}\mathit{o}\mathit{r}\mathit{i}\mathit{n}\mathit{e}\mathit{}\mathit{d}\mathit{i}\mathit{f}\mathit{f}\mathit{e}\mathit{r}\mathit{}\mathit{i}\mathit{n}\mathit{}\mathit{n}\mathit{u}\mathit{m}\mathit{b}\mathit{e}\mathit{r}\mathit{}\mathit{o}\mathit{f}\mathit{}\mathit{n}\mathit{e}\mathit{u}\mathit{t}\mathit{r}\mathit{o}\mathit{n}\mathit{s}\mathit{}\mathit{p}\mathit{r}\mathit{e}\mathit{s}\mathit{e}\mathit{n}\mathit{t}\mathit{}\mathit{i}\mathit{n}\mathit{}\mathit{t}\mathit{h}\mathit{e}\mathit{m}\mathit{.} \end{gathered}$$