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Mendelevium, ₁₀₁Md

Mendelevium
Pronunciation	/ˌmɛndəˈliːviəm/ (MEN-də-LEE-vee-əm) /ˌmɛndəˈleɪviəm/ (MEN-də-LAY-vee-əm)
Mass number	[258]
Mendelevium in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson Tm ↑ Md ↓ — fermium ← mendelevium → nobelium
Atomic number (Z)	101
Group	f-block groups (no number)
Period	period 7
Block	f-block
Electron configuration	[Rn] 5f 7s
Electrons per shell	2, 8, 18, 32, 31, 8, 2
Physical properties
Phase at STP	solid (predicted)
Melting point	1100 K ​(800 °C, ​1500 °F) (predicted)
Density (near r.t.)	10.3(7) g/cm (predicted)
Atomic properties
Oxidation states	common: +3 +2
Electronegativity	Pauling scale: 1.3
Ionization energies	1st: 636 kJ/mol
Other properties
Natural occurrence	synthetic
Crystal structure	​face-centered cubic (fcc) (predicted)
CAS Number	7440-11-1
History
Naming	after Dmitri Mendeleev
Discovery	Lawrence Berkeley National Laboratory (1955)
Isotopes of mendelevium v e
Main isotopes Decay Isotope abun­dance half-life (t1/2) mode pro­duct Md synth 77.7 min ε Fm α Es Md synth 5.52 h ε Fm α Es Md synth 51.6 d α Es Md synth 1.60 h SF – Md synth 27.8 d SF –
Category: Mendelevium view talk edit | references

Wikipedia Categories

• Actinides
• Mendelevium
• Dmitri Mendeleev
• Chemical elements
• Synthetic elements
• Pages including recorded pronunciations
• Chemical elements with face-centered cubic structure

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