Template:Infobox lawrencium

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Lawrencium,  103Lr
General properties
Name, symbol lawrencium, Lr
Appearance silvery (predicted)[1]
Pronunciation Listeni/ləˈrɛnsiəm/
lə-REN-see-əm
Lawrencium in the periodic table
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (polyatomic nonmetal)
Bromine (diatomic nonmetal)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanide)
Cerium (lanthanide)
Praseodymium (lanthanide)
Neodymium (lanthanide)
Promethium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Dysprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Thulium (lanthanide)
Ytterbium (lanthanide)
Lutetium (lanthanide)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinide)
Thorium (actinide)
Protactinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Americium (actinide)
Curium (actinide)
Berkelium (actinide)
Californium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrencium (actinide)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Ununtrium (unknown chemical properties)
Flerovium (post-transition metal)
Ununpentium (unknown chemical properties)
Livermorium (unknown chemical properties)
Ununseptium (unknown chemical properties)
Ununoctium (unknown chemical properties)
Lu

Lr

(Upp)
nobeliumlawrenciumrutherfordium
Atomic number (Z) 103
Group, block group n/a, d-block
Period period 7
Element category   actinide, sometimes considered a transition metal
Standard atomic weight (Ar) [266]
Electron configuration [Rn] 5f14 7s2 7p1
per shell
2, 8, 18, 32, 32, 8, 3
Physical properties
Phase solid (predicted)
Melting point 1900 K ​(1627 °C, ​2961 °F) (predicted)
Atomic properties
Oxidation states 3
Ionization energies 1st: 478.6 kJ/mol[2]
2nd: 1428.0 kJ/mol (predicted)
3rd: 2219.1 kJ/mol (predicted)
Miscellanea
Crystal structure hexagonal close-packed (hcp)
Hexagonal close-packed crystal structure for lawrencium

(predicted)[3]
CAS Number 22537-19-5
History
Naming after Ernest Lawrence
Discovery Lawrence Berkeley National Laboratory and Joint Institute for Nuclear Research (1961–1971)
Most stable isotopes of lawrencium
iso NA half-life DM DE (MeV) DP
266Lr syn 11 h SF
262Lr syn 3.6 h ε 262No
261Lr syn 44 min SF/ε?
260Lr syn 2.7 min α 8.04 256Md
259Lr syn 6.2 s 78% α 8.44 255Md
22% SF
256Lr syn 27 s α 8.62,8.52,8.32... 252Md
255Lr syn 21.5 s α 8.43,8.37 251Md
254Lr syn 13 s 78% α 8.46,8.41 250Md
22% ε 254No
· references

References

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