What's the Best Atomic Substance?

Sesium one 33 is great cause it's a stable atom. It has a very specific number of revolutions in that tick, like a huge umber of revolutions,. But before the earth gets back to this point again, ye, kind of in the dido i amino, dividing that byther about yether, about like teother, about 86 thousand seconds in a day. Well, ye ar, right? Because i think it's ooverlooked.