Vlastnosti

CAS Number7440-42-8
PubChem CID5462311
Atómový polomer90
Atómový objem4,6
Atómová hmotnosť10,811
Orbitálp
Teplota varu3 927
Bulk Modulus
KategóriaPolokovy
Kryštálová sústavaJednoduchý trigonálny
FarbaČierna
Kovalentný polomer84
Hustota2,34
Electrical Resistivity
Elektrónová konfigurácia[He] 2s2 2p1
Elektróny v obale2, 3
Elektronegativita2,04
Electrons5
Skupina13
Skupenské teplo topenia50
Skupenské teplo varu507
Ionizačný potenciál8,298
Magnetic Ordering
Magnetic Susceptibility
Hmota10,811
Mass Number5
Teplota topenia2 076
NázovBór
Neutróny6
Protónové číslo11
Oxidačné stavy1, 2, 3
Perióda2
SkupenstvoTuhé látky
Poisson Ratio
Protóny5
Shear Modulus
Tepelná kapacita1,026
ZnačkaB
Tepelná vodivosť0,274
Van der Waals radius
Young's Modulus
Množstvo
Množstvo v zemskej kôre0.00086%
Množstvo vo vesmíre1×10-7%
B Bór 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]

Stabilné izotopy

10B 11B

Nestabilné izotopy

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.