Question

What was established about each element's radiation spectrum in the early nineteenth century?

Options

• Each element emits only alpha-rays and beta-rays.

• Each element has the same set of spectral lines.

• Each element is associated with a characteristic spectrum of radiation.

• Each element emits only a continuous distribution of wavelengths.

Answer 1

Each element is associated with a characteristic spectrum of radiation. Its spectral pattern can therefore be distinguished from that of other elements.