Skill 17.7 Relating photon energy to the wavelength and frequency of light

Skill 17.7 Relating photon energy to the wavelength and frequency of light 

An electron may exist at distinct radial distances (f ) from the nucleus. These distances are proportional to the square of the principal quantum number, n. For a hydrogen atom (shown at left), the proportionality constant is called the Bohr radius (ao = 5.29x10 m). This value is the mean distance of an electron from the nucleus at the ground state of n = 1. The distances of other electron shells are found by the formula  

As n 00, the electron is no longer part of the hydrogen atom. Ionization occurs and the atom becomes an H ion. 

Photon wavelength (2) in meters and frequency (v) in reciprocal seconds are inversely proportional to each other. The proportionality constant between them 

A quantum of energy (AE) emitted from or absorbed by an electron transition is directly proportional to the frequency of radiation. The proportionality constant between them is Planck s constant h = 6.63x10 J s)  

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