Mendelevium

Symbol: Md
Atomic number: 101
Category: actinides
Group: n/a
Period: 7
Block: f
Atomic weight: (258) g/mol
Electrons per shell: 2, 8, 18, 32, 31, 8, 2
CAS number: 7440-11-1
Phase: solid
Density: unknown
Melting point: 1100 K (827C, 1521F)
Boiling point: unknown
Crystal structure: unknown
Oxidation states: 2, 3
Electronegativity: 1.3 (Pauling scale)
Name's origin: Dmitri Mendeleev
Name's meaning: in honor of the inventor of the periodic table of elements
Facts:
- a metallic radioactive transuranic element
- is synthesized by bombarding einsteinium with alpha particles
- 15 radioisotopes of mendelevium have been characterized, with the most stable being mendelevium-258 with a half-life of 51.5 days
- there are no other known uses of mendelevium
- only trace amounts of the element have ever been produced
- is a synthetic element
- its symbol was formerly known as Mv