• 46

    Pd

  • Transition metals

    Palladium

  • Group

    10

  • Period

    5

  • Block

    d

Chemical element【钯】
  • Protons

    46

  • Electrons

    46

  • Neutrons

    60

因小行星帕拉斯(希腊神话中的智慧之神)而得名

General Properties

Atomic Number
46
Atomic Weight
106.42
Mass Number
106
Category
Transition metals
Color
Silver
Radioactive
No
Discovery year
1803
Crystal Structure
Face Centered Cubic

History

钯在1803年被沃拉斯顿在伦敦发现

他检测了海洋地区原油提取残留品,一种盐酸和硝酸的混酸

他然后用一系列的方法分离出了钯
Electrons per shell
2, 8, 18, 18
Electron Configuration
[Kr] 4d10
Pd

Physical Properties

Phase
Solid
Density
12.02g/cm3
Melting Point
1828.05 K | 1554.9 °C | 2830.82 °F
Boiling Point
3236.15 K | 2963 °C | 5365.4 °F
Heat of Fusion
16.7 kJ/mol
Heat of Vaporization
380 kJ/mol
Specific Heat Capacity
0.244 J/g·K

Atomic Properties

Atomic Radius
137 pm
Covalent Radius
139 pm
Electronegativity
2.2 (鲍林标度)
Ionization Potential
8.3369 eV
Atomic Volume
8.9 cm3/mol
Thermal Conductivity
0.718 W/cm·K
Oxidation States
2, 4
Abundance in Earth's crust
6.3×10-7%
Abundance in Universe
2×10-7%
CAS Number
7440-05-3
PubChem CID Number
23938

Applications

钯的最广泛应用是汽车工业的催化转化

细小的ba3是一种优良的加氢和脱氢的催化剂

这种金属被用于牙医业务,手表制造和外科手术器械以及电器
在19世纪,钯比铂还贵
Stable Isotopes
102Pd, 104Pd, 105Pd, 106Pd, 108Pd, 110Pd
Unstable Isotopes

91Pd, 92Pd, 93Pd, 94Pd, 95Pd, 96Pd, 97Pd, 98Pd, 99Pd, 100Pd, 101Pd, 103Pd, 107Pd, 109Pd, 111Pd, 112Pd, 113Pd, 114Pd, 115Pd, 116Pd, 117Pd, 118Pd, 119Pd, 120Pd, 121Pd, 122Pd, 123Pd, 124Pd