When photons with a wavelength of 310.nm strike a magnesium plate, the maximum velocity of the ejected electrons is 3.45 * 10⁵ m/s. Calculate the binding energy of electrons to the magnesium surface. A)386 kJ/mol B)419 kJ/mol C)32.7 kJ/mol D)321 kJ/mol E)353 kJ/mol

Question

Quizplus · Accepted Answer

The binding energy can be calculated using the photoelectric equation: $E_{photon} = KE + BE$. First, calculate the energy of the photon using $E_{photon} = \frac{hc}{\lambda}$. Then, calculate the kinetic energy (KE) using $KE = \frac{1}{2}mv^2$. Subtract KE from $E_{photon}$ to find the binding energy (BE) in joules, and convert it to kJ/mol.

When Photons with a Wavelength of 310