Question

Which one of the following statements is not
correct?
(A) Rydberg constant and wave number
have same units
(B) Lyman series of hydrogen spectrum
occurs in the ultraviolet region
(C) The angular momentum of the
electron in the ground state of
h
hydrogen atom is equal to
2T
(D) The radius of the first Bohr orbit of
hydrogen atom is 2.116 x 10-8 cm​

Answer 1

Answer:

See below.

Explanation:

A. Yes, Rydberg constant and wave number do have the same units. Hence, the statement is true.

B. Yes, the Lyman series of the hydrogen spectrum  occurs in the ultraviolet region. This statement is also true. It was Theodore Lyman who discovered spectral lines from 1906-1914.

C. No, The angular momentum of the  electron in the ground state of  a hydrogen atom is not equal to  2T. This is because in the ground state (n=1) the angular momentum is always zero.

D. The radius of the first Bohr orbit of  a hydrogen atom is 2.116 x 10⁻⁸ cm​. This statement is correct. (I'm not very sure. Please feel free to correct me if I'm wrong!)

Hope this helps!

Answer 2

Answer:

(a) True

(b) True

(c) False

(d) True