todays-xkcd:

[A periodic table with regions labeled facetiously, such as hydrogen being labelled "slightly fancy protons", the platinums labelled "[dollar signs]", Lithium and Beryllium being labelled "weird dirt", and the Noble Gases being labelled "lawful neutral".]ALT

Cesium-133, let it be. Cesium-134, let it be even more.

Periodic Table Regions [Explained]

Transcript

[A periodic table with regions labeled.]

[Hydrogen:] Slightly fancy protons
[Lithium and Beryllium:] Weird dirt
[Group 1 & 2 metals, Periods 3-4:] Regular dirt
[Group 1 & 2 metals, Periods 5-7:] Ends in a number, let it slumber ends in a letter, not much better
[Left side of the transition metals group:] Boring alloy metals Probably critical to the spark plug industry or something (but one of them is radioactive so stay on your toes)
[Most of the top row of the transition metals + aluminum:] Regular metals
[Below the rightmost “regular metals” - the “ordinary metals” and some transition metals:] Weird metals
[The platinum group:] $$$$
[Boron:] Boron (fool’s carbon)
[Carbon, Nitrogen, and Phosphorus:] You are here
[The Halogens:] Safety goggles required
[Noble Gases:] Lawful neutral
[Iodine and Radon:] Very specific health problems
[Ordinary metals and metalloids - Arsenic, Antimony, Tellurium, Thallium, Lead, Bismuth, Polonium] Murder weapons
[Astatine and Period 7 from Rutherfordium onwards:] Don’t bother learning their names - they’re not staying long
[Lanthanides and Actinides:] Whoever figures out a better way to fit these up there gets the next Nobel Prize