What element has the symbol 'Mc'?

Moscovium (symbol Mc) is the correct answer. The other options have different symbols: Molybdenum is Mo, Magnesium is Mg, and Mercury is Hg (from its Latin name, hydrargyrum). So if you see Mc, think Moscovium. Moscovium is a synthetic, superheavy element with atomic number 115, created in particle accelerators and decaying in fractions of a second. It was named after Moscow Oblast, home to Russia’s Joint Institute for Nuclear Research, where it was first reported with U.S. collaborators. Tip to remember: new, man-made elements often