wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The recoil speed of a hydrogen atom after it emits a photon in going from n=5 state to n=1 state is

A
4.718 m s1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
7.418 m s1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
4.178 m s1
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
7.148 m s1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 4.178 m s1
Momentum, p=Ec=mv
velocity, v=δ Emc, mass of hydrogen atom m=1.67×1027Kg

E=13.6Z2n2

δE=E5E1=13.056 eV

Putting the value in velocity expression we get v=4.175 ms1

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Bohr's Model of Atom
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon