BOHRIUM

介绍

原子数: 107
组: 7 or VII B
原子量: 264
期: 7
CAS号码: 54037-14-8

分类

金属
非金属
非金属
碱金属
碱土金属
过渡金属
硫族
卤素
惰性气体
镧系元素

稀土元素
铂族金属
超铀
没有稳定的同位素
固体
液体
加油站
固体 (预料到的)

描述 • 用途/功能

This element, expected to have chemical properties similar to rhenium, was synthesized and unambiguously identified in 1981, using the Universal Linear Accelerator (UNILAC) at the Gesellschaft für Schwerionenforschung (G.S.I.) in Darmstadt, Germany. The discovery team was led by Armbruster and Münzenberg. The reaction producing the element was proposed and applied earlier by a Dubna Group led by Oganessian in 1976. A target of 209Bi was bombarded by a beam of 54Cr ions. In 1983 experiments at Dubna using the 157 -inch cyclotron, produced 262Bh by the reaction 209Bi + 54Cr. The alpha decay of 246Cf, the sixth member in the decay chain of 262Bh, served to establish a 1-neutron reaction channel. 1

物理性能

密度:   g/cm3

* - at 1 atm

电子组态

电子组态: [Rn] 7s2 5f14 6d5
块: d
最高占据能级: 7
价电子: 

量子数:

n = 6
ℓ = 2
m = 2
ms = +½

粘接

热化学

比热: 
导热系数:  (W/m)/K, 27°C 2
融合热: 
汽化热: 
物质状态 生成焓 (ΔHf°)3 熵 (S°)3 吉布斯自由能 (ΔGf°)3
(kcal/mol) (kJ/mol) (cal/K) (J/K) (kcal/mol) (kJ/mol)
(g) 107.46 449.61264 41.05 171.7532 100.29 419.61336

同位素

核素  4 半衰期 4 核自旋 4 结合能
260Bh 260.12197(62)# 0.3# ms 1,903.05 MeV
261Bh 261.12166(25)# 13(4) ms [12(+5-3) ms] 1,911.12 MeV
262Bh 262.12289(37)# 290(160) ms 1,919.19 MeV
263Bh 263.12304(39)# 200# ms 1,927.26 MeV
264Bh 264.1246(3)# 1.3(5) s [0.44(+60-16) s] 1,935.33 MeV
265Bh 265.12515(41)# 0.9(+7-3) s 1,943.41 MeV
266Bh 266.12694(22)# 5(3) s 1,951.48 MeV
267Bh 267.12765(28)# 22(10) s [17(+14-6) s] 1,959.55 MeV
268Bh 268.12976(41)# 25# s 1,967.62 MeV
269Bh 269.13069(44)# 25# s 1,966.38 MeV
270Bh 270.13362(50)# 30# s 1,974.45 MeV
271Bh 271.13518(60)# 40# s 1,982.52 MeV
272Bh 272.13803(65)# 10(+12-4) s 1,990.59 MeV
273Bh 273.13962(89)# 90# min 1,998.66 MeV
274Bh 274.14244(84)# 90# min 1,997.42 MeV
275Bh 275.14425(70)# 40# min 2,005.49 MeV
值标记#不是纯粹从实验数据得出,但至少部分来自系统的发展趋势。旋转弱任务参数都包含在括号中。 4

丰富

安全信息


材料安全数据表 - ACI Alloys, Inc.

了解更多信息

外部链接:

来源

(1) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 4:6.
(2) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; pp 6:123-6:137.
(3) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; pp 6:107-6:122.
(4) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(5) - Atomic Mass Data Center. http://amdc.in2p3.fr/web/nubase_en.html (accessed July 14, 2009).