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Colorless to slightly yellow fuming liquid.

Mol. Wt.: 153.39
M.P.: 20C
B.P.: 105.1C
Density: 1.685 @ 15.5C
Vapor Pressure: 40 mm @ 27.3C
Vapor Density: 5.3
Used as the phosphorus source for phosphorus diffusion.

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Vapor

A gas formed by boiling or evaporating a liquid.

Peroxide

A compound containing oxygen in the -1 oxidation state. Metal peroxides contain the peroxide ion, O22

Open Sextet

Refers to species that have only six electrons in the highest energy level of the central element (many Lewis acids).

Half-Cell

Compartment in which the oxidation or reduction half-reaction occurs in a voltaic cell.

Periodicity

Regular periodic variations of properties of elements with atomic number (and position in the periodic table).

Equilibrium Constant

A quantity that characterizes the position of equilibrium for a reversible reaction, its magnitude is equal to the mass action expression at equilibrium. K varies with temperature.

Ternary Compound

A compound consisting of three elements, may be ionic or covalent.

Adhesive Forces

Forces of attraction between a liquid and another surface.

Use of diamonds

Diamond is a crystalline modification of pure carbon formed in the deep interior of the Earth, in the upper mantle at depths of more than 80-100 kilometers, at exceptionally high pressure and temperature. It is the most precious stone, the hardest and most wear-resistant mineral, the most brilliant and timeless gem.

Heisenberg Uncertainty Principle

It is impossible to determine accurately both the momentum and position of an electron simultaneously.