42 Mo Molybdenum 95.95 u

Molybdenum

周期
5
族
6
区块
d-区块
相态 (STP)
Solid

Molybdenum is a high-melting-point transition metal essential for steel alloys. It is also a trace element necessary for life.

About Molybdenum

Distinguished by an unusually high melting point among the transition metals, molybdenum (Mo) is element 42, positioned in group 6 of period 5 within the d-block. Its refractory character makes it valuable in steel alloys, where it improves strength, hardenability, and resistance to heat and corrosion. Molybdenum is also a biologically essential trace element, serving as a cofactor in enzymes vital to living organisms. The metal has an atomic mass of 95.95 and the electron configuration [Kr] 4d⁵ 5s¹, with a Pauling electronegativity of 2.16. A solid at standard conditions, it lies directly below chromium in the periodic table and shares that group's tendency toward multiple oxidation states.

物理属性

原子质量 95.95 u
STP相态 Solid

电子属性

电负性 2.16

电子构型

构型 [Kr] 4d⁵ 5s¹

Electron Shell Configuration

Molybdenum electron shell configuration Mo 2e⁻ 8e⁻ 18e⁻ 13e⁻ 1e⁻
Electron shell structure of Molybdenum — electrons per shell.
Shell Electrons
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 13
5 (O) 1

Position in Periodic Table

Molybdenum position in the periodic table Mo

区块与周期

区块

s p d f

周期

1 2 3 4 5 6 7

元素周期表

镧系元素 锕系元素

Compounds Containing Molybdenum

Molybdenum Trioxide

MoO₃

Molybdenum Disulfide

MoS₂

更多过渡金属

21 Sc Scandium 22 Ti Titanium 23 V Vanadium 24 Cr Chromium 25 Mn Manganese 26 Fe Iron 27 Co Cobalt 28 Ni Nickel 29 Cu Copper 30 Zn Zinc

Explore on Science FYI

AlloyFYI
Stainless Steel 316L

Molybdenum adds pitting corrosion resistance

Frequently Asked Questions

What is Molybdenum?
Molybdenum (Mo) is a chemical element with atomic number 42. It is a solid at standard temperature and pressure, classified as a 过渡金属.
What are the key properties of Molybdenum?
Molybdenum has an atomic mass of 95.95 u.
What is the electron configuration of Molybdenum?
The electron configuration of Molybdenum is [Kr] 4d5 5s1. It is in the d-block of the periodic table.
What is the electronegativity of Molybdenum?
Molybdenum has an electronegativity of 2.16 on the Pauling scale.