What is the wavelength of 7000 Å in nanometers (nm)?

What is the wavelength of light emitted (in nm) when the electron in a hydrogen atom moves from n=4 to n=2?

If the frequency of electromagnetic radiation is 1.22 x 10^15 Hz, what is the wavelength of this radiation?

What is the wavelength, in nanometers, of a photon with 5.11 × 10⁻¹⁹ J of energy?

What must be the velocity, in meters per second, of a beam of electrons if they are to display a de Broglie wavelength of 880 nm?

Which of the following statements is true of visible light?

Which property of visible light primarily determines its perceived color?

Which of the following best describes the relationship between the frequency (ν) and wavelength (λ) of electromagnetic radiation?

Which type of electromagnetic waves has the shortest wavelength and the highest frequency?