Question

To produce an emission spectrum of hydrogen it needs to be ______.

Options

• in glowing gaseous form

• hot and white light shining through

• cold and white light shining through

• cool liquid form

Answer 1

To produce an emission spectrum of hydrogen it needs to be in glowing gaseous form.

Explanation:

The emission spectrum of a luminous source is the spectrum of light emitted by that source. Hydrogen gas splits into hydrogen atoms when heated to a high temperature. These atoms absorb energy at first and then progress to greater energy levels. They emit varying amounts of energy after a short time and then revert to their previous level. This results in a significant number of lines in the hydrogen atomic spectrum. Each line corresponds to a specific wavelength of light.