Question

what is pfund series​

Answer 1

Answer:

A sequence of absorption or emission lines in the far-infrared part of the spectrum, due to hydrogen. They are caused by electron jumps between the fifth energy level and higher levels. Pfund-α is at a wavelength of 7.46 μm, and the spacing between the lines diminishes as they converge on the series limit at 2.28 μm.

Answer 2

Answer:

a series of lines in the infrared spectrum of hydrogen.

Explanation: