Propriedades

CAS Number7440-42-8
PubChem CID5462311
Raio atómico90
Volume atômico4,6
Massa atômica10,811
Blocop
Ponto de ebulição3.927
Bulk Modulus
CategoriaSemimetais
Estrutura cristalinaTrigonal simples
CorPreto
Raio covalente84
Densidade2,34
Electrical Resistivity
Configuração eletrônica[He] 2s2 2p1
Elétrons por nível2, 3
Eletronegatividade2,04
Electrons5
Grupo13
Entalpia de fusão50
Entalpia de vaporização507
Potencial de ionização8,298
Magnetic Ordering
Magnetic Susceptibility
Massa10,811
Mass Number5
Ponto de fusão2.076
NomeBoro
Nêutrons6
Número atómico11
Estados de oxidação1, 2, 3
Período2
Estado da matériaSólido
Poisson Ratio
Prótons5
Shear Modulus
Calor específico1,026
SímboloB
Condutividade térmica0,274
Van der Waals radius
Young's Modulus
Abundância
Abundância na Crosta Terrestre0.00086%
Abundância no Universo1×10-7%
B Boro 5 10.811 13 2 p 5 2079.0 2550.0 [He] 2s2 2p1 2 3 2.34 0.00086% Black Rhombohedral 2.0 2.051 {"1":"800.6","2":"2427.1","3":"3659.7","4":"25025.8","5":"32826.7"} 801 26.7 82 3 0.98 4.6 22.6 507.8 1.026 27.0 0 Solid, Diamagnetic, Insulator, Stable, Natural, Metalloid BO-ron Hard, brittle, lustrous black semimetal. Exists in the earth's crust at an average proportion of about 10 parts per million. Used with titanium & tungsten to make heat resistant alloys for jets & rockets. Obtained from kernite, a kind of borax (Na2B4O7.10H2O). High purity boron is produced by electrolysis of molten potassium fluroborate and potassium chloride (KCl). JzqdHkpXuy4 Boron
Lawrencium was discovered by Albert Ghiorso, Torbjørn Sikkeland, Almon Larsh and Robert M. Latimer in 1961 at the University of California, Berkeley.

It was produced by the bombardment of californium with boron atoms.

Lawrencium was the last member of the actinide series to be discovered. Named after Ernest O. Lawrence, inventor of the cyclotron 5 1808 Sir Humphry Davy, Joseph Louis Gay-Lussac, and Louis Jacques Thénard England, France From the Arabic word "buraq" and the Persian word "burah"

Isotopes of Lawrencium

Standard Atomic Weight

[10.806,10.821]

Isótopos Estáveis

10B 11B

Isótopos Instáveis

6B 7B 8B 9B 12B 13B 14B 15B 16B 17B 18B 19B

Lawrencium is harmful due to its radioactivity
Lawrencium is a trivalent ion in aqueous solution
Lawrencium is used for scientific research purposes only.