Category:Three-letter modern element symbols

• Systematic element name symbols (9 C, 6 F)

U

• Unbinilium (1 C, 1 P, 5 F)
• Seaborgium as unnilhexium (1 F)
• Copernicium as ununbium (7 F)
• Ununennium (1 C, 1 P, 6 F)
• Livermorium as ununhexium (9 F)
• Oganesson as ununoctium (9 F)
• Moscovium as ununpentium (9 F)
• Flerovium as ununquadium (8 F)
• Tennessine as ununseptium (7 F)
• Nihonium as ununtrium (9 F)
• Roentgenium as unununium (2 F)