特性

CAS Number7440-42-8
PubChem CID5462311
原子半径90
モル体積4.6
原子量10.811
ブロックp
沸点3,927
Bulk Modulus
カテゴリ半金属
結晶構造単純 三方晶系
黒色
共有結合半径84
密度2.34
Electrical Resistivity
電子配置[He] 2s2 2p1
電子殻2, 3
電気陰性度2.04
Electrons5
13
融解熱50
蒸発熱507
イオン化エネルギー8.298
Magnetic Ordering
Magnetic Susceptibility
質量10.811
Mass Number5
融点2,076
名称ホウ素
中性子6
原子番号11
酸化数1, 2, 3
周期2
固体
Poisson Ratio
陽子5
Shear Modulus
熱容量1.026
記号B
熱伝導率0.274
Van der Waals radius
Young's Modulus
天然存在比
地殻中における存在比0.00086%
宇宙空間における存在比1×10-7%
B ホウ素 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"

ローレンシウムの同位体

Standard Atomic Weight

[10.806,10.821]

安定同位体

10B 11B

不安定同位体

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.