Subject - Physics:

Basics

MCQ - 42-10509

Question:

Minimum excitation potential of Bohr's first orbit in hydrogen atom is.

13.6 V
10.2 V
3.4 V
10.2 V

Correct Answer: B

Explanation:

Excitation potential = Excitation energy / e Minimum excitation energy corresponds to excitation from n = 1 to n = 2 ∴ Minimum excitation energy in hydrogen atom = -3.4 - (-13.6) = 10.2eV so minimum excitation potential = 10.2 eV.

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