Which of the following statements concerning electromagnetic

Which of the following statements concerning electromagnetic waves emitted from atoms is true

Which of the following statements concerning electromagnetic waves emitted from atoms is true A collection of atoms emits electromagnetic radiation only at specific wavelengths. Atoms only emit radiation in the visible part of the electromagnetic spectrum. Free atoms have 3n unique lines in their atomic spectra, where n is the number of electrons. The wavelengths of electromagnetic radiation emitted by free atoms is specifically characteristic of the particular element.

Solution

part A