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The direct solidification of a vapor by cooling, the reverse of sublimation.

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Mass Deficiency

The amount of matter that would be converted into energy if an atom were formed from constituent particles.

Optical Isomers

Stereoisomers that differ only by being nonsuperimposable mirror images of each other, like right and left hands, also called enantiomers.

D -Transition elements (metals)

B Group elements except IIB in the periodic table, sometimes called simply transition elements EX. Fe, Ni, Cu, Ti .
For further information see Metals.

Alloying

Mixing of metal with other substances (usually other metals) to modify its properties.

Sigma Orbital

Molecular orbital resulting from head-on overlap of two atomic orbitals.

Hydrolysis Constant

An equilibrium constant for a hydrolysis reaction.

Raoult's Law

The vapor pressure of a solvent in an ideal solution decreases as its mole fraction decreases.

Metallic Conduction

Conduction of electrical current through a metal or along a metallic surface.

ytterbium

A rare metallic element found in gadolinite and forming compounds resembling those of yttrium. Symbol: Yb, at. wt.: 173.04, at. no.: 70, sp. gr.: 6.96. Cf."rare-earth element."

 

Basic Salt

A salt containing an ionizable OH group.