Proprietăți

CAS Number7440-51-9
PubChem CIDna
Rază atomică174
Volum molar18,28
Masă atomică[247]
Blocf
Punct de fierbere3.110
Bulk Modulus
CategorieActinide
Structură cristalinăSistemul Hexagonal
CuloareArgint
Rază de covalență169
Densitate13,51
Electrical Resistivity
Configurație electronică[Rn] 5f7 6d1 7s2
Electroni pe nivelul de energie2, 8, 18, 32, 25, 9, 2
Electronegativitate1,3
Electrons96
Grupăna
Energie de fuziunena
Energie de evaporarena
Potențial de ionizare5,992
Magnetic Ordering
Magnetic Susceptibility
Masa[247]
Mass Number96
Punct de topire1.340
NumeCuriu
Neutroni151
Număr atomic247
Număr de oxidare3, 4
Perioadă7
FazăSolid
Poisson Ratio
Protoni96
Shear Modulus
Căldură specifică-
SimbolCm
Conductivitate termică0,1
Van der Waals radius
Young's Modulus
Abundență naturală
Abundența în scoarța Pământuluina
Abundența în Universna
Cm Curiu 96 (247) 7 f 96 1340.0 [Rn] 5f7 6d1 7s2 2 8 18 32 25 9 2 13.5 None Silver Hexagonal 1.3 {"1":"581"} 581 3 18.3 10.0 1 1.56×1077y AlphaEmission Solid, Actinide, Radioactive, Synthetic KYOOR-i-em Silvery, malleable, synthetic radioactive metal. It has no significant commercial applications. Made by bombarding plutonium with helium ions. So radioactive it glows in the dark. sZobqPFNcwg Curium
Carl Wilhelm Scheele obtained oxygen by heating mercuric oxide and nitrates in 1771, but did not publish his findings until 1777.

Joseph Priestley also prepared this new air by 1774.

The name oxygen was coined in 1777 by Antoine Lavoisier, whose experiments with oxygen helped to discredit the then-popular phlogiston theory of combustion and corrosion. Din cuvântul grecesc oxys, acid, și gen (formal) 96 1944 Glenn T. Seaborg, Ralph A. James, Albert Ghiorso USA Named after Pierre and Marie "Curie"

Isotopes of Oxygen

Standard Atomic Weight

Izotopi stabili

Izotopi instabili

233Cm 234Cm 235Cm 236Cm 237Cm 238Cm 239Cm 240Cm 241Cm 242Cm 243Cm 244Cm 245Cm 246Cm 247Cm 248Cm 249Cm 250Cm 251Cm 252Cm

Oxygen gas can be toxic at elevated partial pressures, leading to convulsions and other health problems
Green and red colors in the Aurora Borealis are caused by oxygen atoms
Pure oxygen is frequently used to help breathing in patients with respiratory ailments.

Oxygen is used in oxyacetylene welding, as an oxidant for rocket fuel, and in methanol and ethylene oxide production.

It is also used in the production of steel, plastics and textiles.

Plants and animals rely on oxygen for respiration.