The Periodic Table of Elements
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101
Md
Mendelevium
Summary
Mendelevium is a synthetic element with chemical symbol Md (formerly Mv) and atomic number 101. A metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities through neutron bombardment of lighter elements. It is the antepenultimate actinide and the ninth transuranic element.
Block: f
Period: 7
Group: 3
Atomic Mass: 258 g/mol (amu)
Discovered By: Lawrence Berkeley National Laboratory
Phase: Solid
Boiling Point: N/A
Melting Point: 1100 K
Type: actinide
Density: g/cm3
Electron Configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f13
Electron Configuration (Semantic): [Rn] 5f13 7s2