What Does S, P, D, F Stand For? The orbital names s, p, d, and f stand for names given to groups of lines originally noted in the spectra of the alkali metals. These line groups are called sharp, principal, diffuse, and fundamental.

What is the meaning of SPDF?

The spdf stands for sharp, principal, diffuse, and fundamental respectively. These letters are used as the visual impression to describe the fine structure of the spectral lines that occurs due to the spin orbital interaction.

What is the use of SPDF?

Spdf or SPDF may refer to: Electron configuration, for which there is an obsolete system of categorizing spectral lines as "sharp", "principal", "diffuse" and "fundamental"; also the names of the sub shells or orbitals. The blocks of the periodic table.