Physicists in Japan had created was a kind of Frankensodium, an 11-proton particle with a whopping 28 neutrons stuffed into its nucleus. This sodium-39 was the most massive isotope of sodium known to exist. https://www.wired.com/story/what-makes-an-element-the-frankenstein-of-sodium-holds-clues/?mbid=social_twitter&utm_brand=wired&utm_social-type=owned
