CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

In a Bohr's model of atom when an electron jumps from n=1 to n=3, how much energy will be emitted or absorbed


A

2.15 X 10-11 erg

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

0.1911 X 10-10 erg

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C

2.389 X 10-12 erg

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

0.239 X 10-10 erg

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

Step 1: Formula

ΔE=(RH)n2final(RH)n2initial

RHisrydrberg's constantanditsvalue=2.18×1018J

ni&nf stands for initial and final orbit respectively

Step 2: Calculation

According to Bohr's model E=E3E1

ΔE=2.18×1018[191]

=2.18×1018×89

=1.937×1018J

=1.937×1011ergs[1J=107ergs]

=0.1937×1010ergs

Since the electron is going from n = 1 to n = 3 hence energy is absorbed.

Conclusion: Hence, option (B) is correct.


flag
Suggest Corrections
thumbs-up
148
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Emission and Absorption Spectra
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon