Determine the energy per mole (in ) of photons having a wavelength of

PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation

Problem

Determine the energy per mole (in

\text{kJ mol}^{-1}

) of photons having a wavelength of

2.50\times10^{3}\,\text{nm}

. Which type of molecular transition would photons of this wavelength most likely promote? (a)

\approx 290\,\text{kJ mol}^{-1}

; electronic transition (b)

\approx 0.048\,\text{kJ mol}^{-1}

; rotational transition (c)

\approx 48\,\text{kJ mol}^{-1}

; vibrational transition (d)

\approx 48\,\text{kJ mol}^{-1}

; electronic transition