Question

4.
Y-Rays photons emitted by the nuclear decay of Te atom is used in radio pharmaceuticals having an
energy 140.511 keV. Wavelength of these y-photons in picometers will be
(A) 8.807 pm
(B) 80.07 pm
(C) 4.403 pm
(D) 2.201 pm​

Answer 1

Answer:

I am going through the same thing and