Unknown
All 10 Unknown in the periodic table: Meitnerium, Darmstadtium, Roentgenium, Copernicium, Nihonium, and more. Properties, electron configurations, 3D models. Free reference for chemistry students and teachers.
- Meitnerium (Mt) · Atomic Number 109
- Darmstadtium (Ds) · Atomic Number 110
- Roentgenium (Rg) · Atomic Number 111
- Copernicium (Cn) · Atomic Number 112
- Nihonium (Nh) · Atomic Number 113
- Flerovium (Fl) · Atomic Number 114
- Moscovium (Mc) · Atomic Number 115
- Livermorium (Lv) · Atomic Number 116
- Tennessine (Ts) · Atomic Number 117
- Oganesson (Og) · Atomic Number 118