#atomic-structure

2 articles

Atomic Structure and the Periodic Table

Electrons do not orbit. They occupy standing-wave probability clouds whose shapes and capacities are fixed by three quantum numbers — and those capacities are exactly why the periodic table has the blocks and row lengths it does.

11 min read·Jul 19, 2026

Chemistry

Spectroscopy: Reading Matter with Light

Atoms absorb and emit light only at wavelengths set by their electron energy levels, so light carries a fingerprint of composition — the basis of knowing what stars, galaxies, and unknown compounds are made of, remotely.

10 min read·Jul 4, 2026