Vitamin B12, also known as cyanocobalamin, is a water-soluble vitamin that is part of the B vitamin family. B vitamins help support adrenal function, help calm and maintain a healthy nervous system, and are necessary for key metabolic processes.
For each of the 80 stable elements, the number of the stable isotopes is given. Only 90 isotopes are expected to be perfectly stable, and an additional 163 are energetically unstable, but have never been observed to decay. Thus, 253 isotopes (nuclides) are stable by definition (including tantalum-180m, for which no decay has yet been observed).
Let's check out tin. Tin has more stable isotopes than any other element. There are 50 protons in every tin atom (which is what makes it tin), and there are isotopes of tin that have 62, 64, 65, 66, 67, 68, 69, 70, 72 and 74 neutrons which are all stable. There are some gaps in there, but there are isotopes of tin that fill in the gaps and also a lot of other isotopes, and they are made in the physics lab.