9. Quantum Mechanics

What is the energy, in joules, of a single photon with a wavelength of 400.0 nm?

What is the energy (in joules) of an electron in a helium ion (He+) at the energy level n = 4? (Use the formula E = -Z^2 R_H / n^2, where Z is the atomic number, R_H = 2.18 × 10^{-18} J, and n is the principal quantum number.)

Which of the following frequencies of light has the highest energy?

What is the energy, in joules, of a UV photon with a wavelength of 254 nm?

Which process must occur before an atom in its ground state can emit a photon?

What is a quantum of light called?

Which of the following best determines the amount of energy of a single photon of light?

Which of the following types of electromagnetic radiation has the highest amount of radiant energy per photon?

When an electron in an atom absorbs energy, which of the following occurs?

When ultraviolet (UV) light strikes ozone (O_3) molecules in the atmosphere, what is the primary effect?

In the context of the energy of light, what are the discrete packets of light energy called?

Upon which one of the following parameters does the energy of a photon depend?

Which of the following photons has the highest energy?

Which term is used to describe a discrete packet of light energy?

What is the energy, in kilojoules, of one mole of photons (an einstein) with a frequency of 8.23 × 10^{15} Hz? (Planck's constant, h = 6.626 × 10^{-34} J·s; Avogadro's number, N_A = 6.022 × 10^{23} mol^{-1})