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At constant temperature the volume occupied by a definite mass of a gas is inversely proportional to the applied pressure.

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Electrophile

Positively charged or electron-deficient.

Galvanizing

Placing a thin layer of zinc on a ferrous material to protect the underlying surface from corrosion.

 

Periodicity

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

Pairing

A favourable interaction of two electrons with opposite m , values in the same orbital.

Voltage

Potential difference between two electrodes, a measure of the chemical potential for a redox reaction to occur.

Valence Electrons

Outermost electrons of atoms, usually those involved in bonding.

Accuracy

How closely a measured value agrees with the correct value.

Coordination Number

In describing crystals, the number of nearest neighbours of an atom or ion. The number of donor atoms coordinated to a metal.

Entropy

A thermodynamic state or property that measures the degree of disorder or randomness of a system.

Actual Yield

Amount of a specified pure product actually obtained from a given reaction. Compare with Theoretical Yield.