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The combination of many small molecules to form large molecules.

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Boron Hydrides

Binary compounds of boron and hydrogen.

Standard Entropy

The absolute entropy of a substance in its standard state at 298 K.

Electronic Transition

The transfer of an electron from one energy level to another.

Equilibrium or Chemical Equilibrium

A state of dynamic balance in which the rates of forward and reverse reactions are equal, the state of a system when neither forward or reverse reaction is thermodynamically favored.

Daughter Nuclide

Nuclide that is produced in a nuclear decay.

 

Chemical Periodicity

The variations in properties of elements with their position in the periodic table.

Electrophile

Positively charged or electron-deficient.

Binary Compound

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

Proton

A subatomic particle having a mass of 1.0073 amu and a charge of +1, found in thew nuclei of atoms.

Enthalpy

The heat content of a specific amount of substance, defined as E= PV.