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Ions resulting from the formation of coordinate covalent bonds between simple ions and other ions or molecules.

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Halogens

Group VIIA elements: F, Cl, Br, I

Dubnium

Discovered : at both Berkeley, California, USA, and Dubna, near Moscow, Russia in 1970. Description:A highly radioactive metal which does not occur naturally, and of which only a few atoms have ever been made. It is of research interest only. Origin:The element is named after the Russian town of Dubna.

Safranine

Also called "phenosafranine". A purplish-red, water-soluble dye, C18H14N4, used for textiles and as a stain in microscopy.

Handmade crystal glass as a work of art

In order for the colored crystal to open in all its beauty and sparkle with every face natural light is required. Handmade crystal glass has specific tactile and aesthetic properties - it is pleasant to touch, it seems to radiate heat. To appreciate the quality and beauty of such things, of course, it is not enough to look at the picture.

Amide

Compound containing the O-C-N group.Compound that can be considered a derivative of ammonia in which one or more hydrogens are replaced by a alkyl or aryl groups.

 

Saturated Solution

Solution in which no more solute will dissolve.

yield

The quantity of product formed by the interaction of two or more substances, generally expressed as a percentage of the quantity obtained to that theoretically obtainable.

S Orbital

A spherically symmetrical atomic orbital, one per energy level.

Insoluble Compound

A very slightly soluble compound.

Unsaturated Hydrocarbons

Hydrocarbons that contain double or triple carbon-carbon bonds.