Question

If the angular momentum of an electron changes from 2h÷ pi
to h ÷ pi during a transition in a hydrogen atom it results in the formation of spectral lines in
A) Visible Region
B)Far IR
C)Near IR
D) None

Answer 1

Answer:

Explanation:

Here is the explanation. Answer is Visible Range.

Answer 2

If the angular momentum of an electron changes from 2h÷ pi to h ÷ pi during a transition in a hydrogen atom it results in the formation of spectral lines in Visible Region.

Given:

• Initial angular momentum = 2h÷ pi.
• Final angular momentum =  h÷ pi.

The angular momentum of an electron is given by the formula nh/ 2π.

• n1 / 2π = 2h÷ pi
• n1 = 4

• n2 / 2π = h÷ pi
• n2 =2

Transitions occurs from 4 → 2 ie, Balmer series ,which lies in the Visible region.