CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Which of the following statement is true regarding Bohr's Model of hydrogen atom?
I. Orbiting speed of an electron decreases as it falls to discrete orbits away from the nucleus
II. Radii of allowed orbits of electrons are proportional to the principal quantum number
III. Frequency with which electrons orbit around the nucleus in discrete orbits is inversely proportional to the cube of principal quantum number
IV. Binding force with which the electron is bound to nucleus increases as it shifts to outer orbits.
Select the correct answer using the codes given below:

A
I and III
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
II and IV
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
I,II and III
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
II,III and IV
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A I and III
According to Bohr's model of hydrogen atom:
Orbiting speed of an electron, vn=2.18×106nm/s
vn decreases when n increases.
Hence I is correct.

Radius of nth orbit, rn=0.529n2Aornn2
Hence II is incorrect.

Frequency with which electron revolves in nth orbit, νn=6.56×1015n3s1
Hence III is also correct.

Binding force between the electron and the nucleus, F=e24πϵor2n and rnn2
F decreases when electron jumps to the outer orbit.

flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon