• bèi

  钡

• 56

  Ba

• Alkaline earth metals

  Barium

• Group

  2

• Period

  6

• Block

  s

• Protons

  56

• Electrons

  56

• Neutrons

  81

希腊文“重量”

General Properties

Atomic Number

56

Atomic Weight

137.327

Mass Number

137

Category

Alkaline earth metals

Color

Silver

Radioactive

No

Discovery year

1808

Crystal Structure

Body Centered Cubic

History

钡在1774年被卡尔 威赫姆 舍勒定义为一种新元素

钡在1808年被戴维在英格兰用电解熔融态钡盐的方法分离出来

本生和马蒂森通过电解氯化钡和氯化铵的混合物得到纯钡

Electrons per shell

2, 8, 18, 18, 8, 2

Electron Configuration

[Xe] 6s²

Abundance in Earth's crust

0.034%

Abundance in Universe

1×10^-6%

CAS Number

7440-39-3

PubChem CID Number

5355457

Applications

钡被用作蒸发吸气剂用于除去真空管中最后的气体痕迹

常用的是镍钡合金和插头电线

硫化钡在石油工业中是钻井开采油气的重要一环

钡同样在药物和消化异常探测中有一定应用

低浓度的钡离子可以作为肌肉刺激剂

Stable Isotopes

¹³⁰Ba, ¹³²Ba, ¹³⁴Ba, ¹³⁵Ba, ¹³⁶Ba, ¹³⁷Ba, ¹³⁸Ba

Unstable Isotopes

¹¹⁴Ba, ¹¹⁵Ba, ¹¹⁶Ba, ¹¹⁷Ba, ¹¹⁸Ba, ¹¹⁹Ba, ¹²⁰Ba, ¹²¹Ba, ¹²²Ba, ¹²³Ba, ¹²⁴Ba, ¹²⁵Ba, ¹²⁶Ba, ¹²⁷Ba, ¹²⁸Ba, ¹²⁹Ba, ¹³¹Ba, ¹³³Ba, ¹³⁹Ba, ¹⁴⁰Ba, ¹⁴¹Ba, ¹⁴²Ba, ¹⁴³Ba, ¹⁴⁴Ba, ¹⁴⁵Ba, ¹⁴⁶Ba, ¹⁴⁷Ba, ¹⁴⁸Ba, ¹⁴⁹Ba, ¹⁵⁰Ba, ¹⁵¹Ba, ¹⁵²Ba, ¹⁵³Ba