Talk about a double whammy! Poor Francium is already the most unstable element in the periodic table with a half-life of just 22 minutes. And here comes Fluorine - the element equivalent of that friend who shows up uninvited and eats all your snacks - saying "Bonjour" like it's not about to steal electrons faster than you can say "chemical reaction."
Francium is basically the VIP in the "gone too soon" club of elements. It's so reactive it would explode on contact with water, and so rare that scientists estimate there's probably less than 30 grams of it in the entire Earth's crust at any given time. When Fluorine (the most electronegative element) shows up, it's basically the grim reaper with a French accent!