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An atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)

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Ionic Bonding

Chemical bonding resulting from the transfer of one or more electrons from one atom or a group of atoms to another.

Denaturation

A process pertaining to a change in structure of a protein form regular to irregular arrangement of the polypeptide chains.

Molar Solubility

Number of moles of a solute that dissolve to produce a litre of saturated solution.

Alpha (a) Particle

Helium ion with 2+ charge, an assembly of two protons and two neutrons.

Coulometry

The quantitative application of Faraday's Law to the analysis of materials. The current and time are the usual variables measured.

Ionization Isomers

Isomers that result from the interchange of ions inside and outside the coordination sphere.

Eutrophication

The undesirable overgrowth of vegetation caused by high concentrates of plant nutrients in bodies of water.

Conformations

Structures of a compound that differ by the extent of rotation about a single bond.

Nonpolar Bond

Covalent bond in which electron density is symmetrically distributed.

How to keep flowers in a vase for long time

The best gift for a woman, as you know, is a beautiful bouquet of flowers. But the cut flowers at home quite quickly wither. But your favorite roses or tulips can keep their freshness if you use our advice. Chemistry and various chemical elements will help us in this difficult matter!