Q.Derive the systematic IUPAC name and three-letter symbol for a hypothetical element with atomic number 120.

A newly discovered element needs a name before IUPAC formally approves the discoverer's proposed permanent name (a process that includes public comment). IUPAC's interim solution is a temporary systematic name built mechanically from the element's own atomic number, so that no two elements can ever be confused and no name has to be "reserved" in advance.

Each digit 0-9 of the atomic number is replaced by a numerical root and a one-letter abbreviation (0 = nil/n, 1 = un/u, 2 = bi/b, 3 = tri/t, 4 = quad/q, 5 = pent/p, 6 = hex/h, 7 = sept/s, 8 = oct/o, 9 = enn/e); the roots for each digit are concatenated in order and the suffix "-ium" is appended, with two elision rules for pronounceability (enn + nil -> enil; bi/tri + ium -> bium/trium). The temporary symbol is built from the first letter of each root used. …