The symbol “Nu” is not used for any element. The letters “Na,” “Ne,” and “N” could also be confused for “Nu.” The letters “Na,” “Ne,” and “N” stand for sodium, neon, and nitrogen, respectively. “Au,” which stands for gold, is another possible element that could be read as “Nu.”
Sodium is an alkali metal with the atomic number 11, while nitrogen has the atomic number 7 and is not a metal. Neon is a nonreactive gas with the atomic number 10. Gold is a transition metal. It has the number 79, which makes it the heaviest element on this list. The number of protons in the nucleus of an atom is shown by the atomic number. For example, a sodium atom has 11 protons.