Question

energy level of atom which of them has 275 nm​

Answer 1

Answer:

Given that,

λ=275nm=275×10

−9

m

Energy is given by

E=

λ

hc

=

275×10

−9

×1.6×10

−19

6.6×10

−34

×3×10

8

E=0.045×10

2

E=4.5ev

Out of all these energy levels no energy range will produce 275 nm. At 275 nm energy produced is 4.5 eV