WebElements Periodic Table of the Elements | Molybdenum

Chemical reactions of the elements

Reaction of molybdenum with air

At room temperature, molybdenum does not react with air or oxygen, O₂. At elevated temperatures (red heat), the trioxide molybdenum(VI) oxide, MoO₃, is formd.

2Mo(s) + 3O₂(g) → 2MoO₃(s)

Reaction of molybdenum with water

At room temperature, molybdenum does not react with water.

Reaction of molybdenum with the halogens

Molybdenum reacts directly with fluorine, F₂, at room temperature to form molybdenum(VI) fluoride, MoF₆. The conditions are much milder than those required for chromium (immediately above molybdenum in the periodic table).

Mo(s) + 3F₂(g) → MoF₆(l) [colourless]

Under carefully controlled conditions, molybdenum(V) fluoride, MoF₅, is formed in the reaction between molybdenum metal and chlorine, Cl₂.

2Mo(s) + 5Cl₂(g) → 2MoCl₅(s) [black]

Reaction of molybdenum with acids

Reaction of molybdenum with bases

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V	Cr	Mn
Nb	Mo	Tc
Ta	W	Re

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Molybdenum	Molybdène
Molybd�n	Molybdeen
Molibdeno	Molibdeno
Molybden	Molibdênio

Molybdenum
- Essential data: names, symbol, atomic number, and atomic weight; block, period, and group in periodic table; description; standard state; registry number; and isolation
- History: meaning of name; discovery; and history of the element
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Molybdenum around us
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- Geology: Abundance of elements in the universe; the sun; meteorites; Earth's crust; oceans; and streams
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Molybdenum compounds
- Compounds: halides, oxides, sulfides, hydrides, and complexes; lattice energies; and reduction potentials
- Electronegativities: Pauling; Sanderson; Allred Rochow; Mulliken-Jaffe; and Allen
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Element properties
- Physics properties: Boiling point; melting point; density; molar volume; thermal conductivity; and electrical resistivity; bulk modulus; critical temperature; superconductivity temperature; hardness (mineralogical, Brinell, and Vickers); linear expansion coefficient; Poisson's ratio; reflectivity; refractive index; rigidity modulus; Young's modulus; velocity of sound
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- Electron shell properties: Electronic configuration; term symbol; electron affinity; ionization energies; and atomic spectra
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Nuclear properties
- Isotopes: isotope abundances; radioactive isotopes; isotope masses; nuclear spins; and nuclear magnetic moment
- NMR properties: frequencies; isotopes; magnetogyric ratios; quadrupole moments; receptivities; and relative sensitivities

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