Lastnosti

CAS Number7440-42-8
PubChem CID5462311
Atomski polmer90
Atomic Volume4,6
Atomska teža10,811
Blokp
Vrelišče3.927
Bulk Modulus
KategorijaPolkovine
Kristalna strukturaSimple Trigonal
BarvaČrna
Kovalentni polmer84
Gostota2,34
Electrical Resistivity
Razporeditev elektronov[He] 2s2 2p1
Electrons per shell2, 3
Elektronegativnost2,04
Electrons5
Skupina13
Talilna toplota50
Izparilna toplota507
Ionization Potential8,298
Magnetic Ordering
Magnetic Susceptibility
Mass10,811
Mass Number5
Tališče2.076
ImeBor
Neutrons6
Vrstno število11
Oksidacijska stanja1, 2, 3
Perioda2
Faza snoviTrdnina
Poisson Ratio
Protons5
Shear Modulus
Toplotna kapaciteta1,026
ZnakB
Toplotna prevodnost0,274
Van der Waals radius
Young's Modulus
Výskyt
Abundance in Earth's crust0.00086%
Abundance in Universe1×10-7%
B Bor 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]

Stable Isotopes

10B 11B

Unstable Isotopes

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.