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The unit used to express dipole moments.

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Hydrogenation

The reaction in which hydrogen adds across a double or triple bond.

Nucleons

Particles comprising the nucleus, protons and neutrons.

Conjugated Double Bonds

Double bonds that are separated from each other by one single bond -C=C-C=C-.

Domain

A cluster of atoms in a ferromagnetic substance, all of which align in the same direction in the presence of an external magnetic field.

Excited State

Any state other than the ground state of an atom or molecule.

Electronic Transition

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

Band Theory of Metals

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

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.

Valence Electrons

Outermost electrons of atoms, usually those involved in bonding.

Boiling Point

The temperature at which the vapor pressure of a liquid is equal to the applied pressure, also the condensation point