Question

© Calculate the wave length of a photon in angstroms units
having energy of one elactron volt
?​

Answer 1

1eV=1.602×10

−19

joule;

h=6.62×10

−34

J−s, c=3×10

8

ms

−1

λ=

E

h⋅c

=12.42×10

−7

m=12.42×10

3

A

˚

.