Separation of Isotopes – Rankers Physics

Nucleus: Practice Problem & Solution

Assertion (A): Isotopes of an element can be separated by using a mass spectrometer. Reason (R): Separation of isotopes is possible because of the difference in electron numbers of isotopes.  
(1) Both (A) & (R) are true and the (R) is the correct explanation of the (A)
(2) Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(3) (A) is true but (R) is false
(4) Both (A) and (R) are false

Solution Explained:

To solve this problem, we apply the core principles of Nucleus. Understanding the underlying formula is key to arriving at the correct answer below:

Assertion (A) is true; mass spectrometers separate particles based on mass-to-charge ratio, and isotopes have different masses. Reason (R) is false; isotopes of an element have the same number of electrons (in a neutral atom) and differ in neutron numbers, not electron numbers.

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