Question

Isotopes have same chemical properties but different physical properties. Explain

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 : ${}_6{}^{12}\mathrm{C}\mathrm{and}{}_6{}^{13}\mathrm{C}\mathrm{are}\mathrm{the}\mathrm{isotopes}\mathrm{of}\mathrm{carbon}.$

Isotopes have same chemical properties but different physical properties because:

1. Chemical properties like bond formation depends on the number of electrons rather than neutrons.
2. Isotopes have same number of electrons therefore their chemical properties are also same.