Assertion: Rydberg’s constant varies with the mass number of a given element. Reason: The reduced mass of the electron is dependent on the mass of the nucleus only.

Question

Assertion: Rydberg’s constant varies with the mass number of a given element. Reason: The reduced mass of the electron is dependent on the mass of the nucleus only. (A) If both A and R are true, and R is a correct explanation of the A (B) If both A and R are true, but R is not a correct explanation of the A (C) If A is true, but R is false (D) If both A and R are false

Tardigrade Admin · Accepted Answer

We know that the Rydberg constant is given by

R = \frac{13.6 e V}{h c}

,
which is independent of the mass number of an element.
The electron does not have a reduced mass. It is defined only for a system of masses.

Q. Assertion : Rydberg’s constant varies with the mass number of a given element. Reason : The reduced mass of the electron is dependent on the mass of the nucleus only.

If both A and R are true, and R is a correct explanation of the A

If both A and R are true, but R is not a correct explanation of the A

If A is true, but R is false

If both A and R are false

We know that the Rydberg constant is given by R=hc13.6eV​, which is independent of the mass number of an element. The electron does not have a reduced mass. It is defined only for a system of masses.

Q. Assertion : Rydberg’s constant varies with the mass number of a given element.
Reason : The reduced mass of the electron is dependent on the mass of the nucleus only.

We know that the Rydberg constant is given by $R = \frac{13.6 e V}{h c}$ ,
which is independent of the mass number of an element.
The electron does not have a reduced mass. It is defined only for a system of masses.