Calculate the wavelength of the photon emitted when an electron in a hydrogen atom…

CHEMISTRY · Single correct · CBSE · Chemistry · Structure of Atom · Structure of Atom

Problem

Calculate the wavelength of the photon emitted when an electron in a hydrogen atom falls from the third orbit to the second orbit. (Take

h c = 1240\,\text{eV\,nm}

.) (a)

547\,\text{nm}

(b)

656\,\text{nm}

(c)

121.6\,\text{nm}

(d)

486\,\text{nm}