Question

Hydrogen spectrum tube a. The light emitted in a hydrogen spectrum tube comes from isolated hydrogen atoms excited by electricity. Is the spectrum of the light emitted by isolated atoms discrete or continuous? b. The spectrum of hydrogen is described by Rydberg's formula: , where R = 1.097 x 107m1 Based on Rydberg's formula, identify the electronic transitions (n + n) that correspond to each of the colored photons that you saw and their expected wavelengths. Compare them to the wavelengths that you observed. c. Are the emitted photons a result of an electron getting excited from a lower to higher energy orbit or falling from a higher to lower energy orbit? d. Calculate the wavelength of light associated with an electron transitioning from the orbit n-2 to n=1. What type of photon (visible light, UV light, infrared, etc.) does it correspond to? Is this more energetic or less energetic than visible light?

Answer 1

J.097X10 1.097X(D 0.25 6 8.22X1 1097x10x 0.75 -7 -6 0.1217 X 0 1211110 is Am ú 3.8-7.4x10 7 AS more eaugetic Viuble tuan