Question

Assertion : Isotopes of an element can be separated by using a mass spectrometer. 

Reason : Separation of isotopes is possible because of the difference in electron numbers of isotopes.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

The correct option is (c) A is true but R is false.

Explanation:

Isotopes have same number of electrons and protons but different neutron number. That's why the mass number of isotopes are different and can be separated by using a mass spectrometer.