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The rates of effusion of gases are inversely proportional to the square roots of their molecular weights or densities.

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Boron Hydrides

Binary compounds of boron and hydrogen.

Dipole Moment

The product of the distance separating opposite charges of equal magnitude of the charge, a measure of the polarity of a bond or molecule, a measured dipole moment refers to the dipole moment of an entire molecule.

Band Theory of Metals

Theory that accounts for the bonding and properties of metallic solids.

Ideal Gas Law

The product of pressure and the volume of an ideal gas is directly proportional to the number of moles of the gas and the absolute temperature.

Accuracy

How closely a measured value agrees with the correct value.

Weak Field Ligand

A Ligand that exerts a weak crystal or ligand field and ge- nerally forms high spin complexes with metals.

Hydrolysis Constant

An equilibrium constant for a hydrolysis reaction.

Ionic Compounds

Compounds containing predominantly ionic bonding.

Gem-dimethyl group

Two methyl groups of the same carbon atom.

Semipermable Membrane

A thin partition between two solutions through which certain molecules can pass but others cannot.