Question

Which one of the following statements is incorrect?

• A. Rydberg’s constant and wave number have same units.
• B. Lyman series of hydrogen spectrum occurs in u.v region
• C. Angular momentum of an electron in the ground state of hydrogen atom =
• D. The radius of first orbit of hydrogen atom is

Answer 1

The correct option is D The radius of first orbit of hydrogen atom is

radius of first orbit of Hydrogen atom is $0.53\stackrel{\circ }{A}or0.53\times {10}^{-8}cm$