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Which of the following is the value for Rydberg constant?

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in Chemistry – Class 11 by (148k points)
Which of the following is the value for Rydberg constant?

(a) 2.95 x 10^-18 J

(b) -2.95 x 10^-18 J

(c) -2.18 x 10^-18 J

(d) 2.18 x 10^-18 J

This question was addressed to me in an online quiz.

My question is taken from Bohr’s Model for Hydrogen Atom topic in division Structure of Atom of Chemistry – Class 11

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Right choice is (c) -2.18 x 10^-18 J

Easiest explanation: The energy of an nth orbit in a hydrogen atom is given by the formula En = -RH/n^2, where is the energy of nth orbit and RH is the Rydberg constant. When experiments were conducted, the product of the energy of nth orbit to the square of n is constant i.e. Rydberg constant.

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