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JEE Main202310 Apr 2023Evening ShiftChemistryHydrogenActual

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : Physical properties of isotopes of hydrogen are different. Reason R : Mass difference between isotopes of hydrogen is very large. In the light of the above statements, choose the correct answer from the options given below:

Options

  1. ABoth A and R are true and R is the correct explanation of A
  2. BA is false but R is true
  3. CA is true but R is false
  4. DBoth A and R are true but R is NOT the correct explanation of A

Correct answer

A. Both A and R are true and R is the correct explanation of A

Step-by-step solution

The isotopes of hydrogen are protium, deuterium, and tritium, which have different physical properties. For example, deuterium has a higher boiling point and a lower vapor pressure than protium, while tritium is radioactive and has a much shorter half-life than the other two isotopes. The mass difference between the isotopes of hydrogen is indeed significant, with protium having a mass of 1 atomic mass unit (amu), deuterium having a mass of 2 amu, and tritium having a mass of 3 amu. So Both A and R are true and R i

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