What is the wavelength in meters of the photon emitted when this highly excited hydrogen atom of hydrogen makes its transition from the n = 14 to the n = 13 state?

An electron in the hydrogen atom makes a transition from an energy state of principal quantum numbers n; to the n = 2 state, If the photon emitted has a wavelength of 434 mm, what is the value of ni?

Thermal neutrons are neutrons that move at speeds comparable to those of air molecules at room  temperature. These neutrons are most effective in  initiating a nuclear chain reaction among 235U isotopes.  Calculate the wavelength (in nm) associated with a  beam of neutrons moving at 7.00 × 102 m/s (mass of  a neutron = 1.675 × 10-27 kg).

Enormous numbers of microwave photons are needed to warm macroscopic samples of matter. A portion of soup containing 445 g of water is heated in a microwave oven from 20.0°C to 98.0°C, with radiation of wavelength 1.55x10−2 m. How many photons are absorbed by the water in the soup?

If a laser emits 5.0 x 1019 photons per second and transfers a total of 80.58 J of energy over 2.06 seconds, what is the wavelength of the emitted light in nm?

If an electron were to move from n=4 to n=2 and produce light with a wavelength of 580 nm, what is the wavelength equivalent in meters?

An electron in a hydrogen atom falls to the n=2 energy level and emits a photon with a wavelength of 410.0 nm. What was the electron's initial energy level?

A highly excited atom of hydrogen makes a transition from the n = 14 to the n = 13 state and emits a photon. What is the energy of this photon in joules?

Calculate the energy (in J) of photons with frequency of 27.3 MHz 2.21 x 1014 1.81 x 10-19 O 1.81 × 1026 1.12 x 107 1.12 x 1014