Electron Configuration is the arrangement of electrons in an atom. Electrons fill the lowest energy level first. The atomic numbers tells how far electrons are from the nucleus. And then, what other rules are there?
Visible light waves have a wavelength from 400 nm to 700 nm, depending on the color. In contrast, atoms have a width of about 0.2 nm. This discrepancy is why you can’t see individual atoms using an optical microscope. The…