Question

a.) The photoelectric effect is the basis of the spectroscopic technique known as photoelectron spectroscopy. An X-ray photon of wavelength 150 pm ejects an electron from the inner shell of an atom. The speed of the electron was measured as 2.14 x 107 m s–1. Calculate the electron’s binding energy (eBE) in electron volts.

b.) What are the momenta of the photons with wavelength: (a) 600 nm (red), (b) 150 pm (X-ray), and (c) 1 cm (microwave)? Give your answers for one photon and for a mole of photons.

Answer 1

Photoelectric effect is when a photon hits an electron and removes it from the atom.

then

a)

joules

b)

Momenta of photons

a)

for one photon

for one mole

b)

for one Photon

for one mole

c)

for one Photon

for one mole  

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