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All terms in this list:

atomic radii: The distance from the nucleus of to the boundary of the surrounding cloud of electrons. Radius of an atom!

Atomic Density: The number of atoms per unit volume.

Ionization Energy: The energy needed to remove an electron from an atom or molecule to infinity

lanthanide contraction: ,(physics) the progressive decrease in the radii of atoms of the lanthanide elements as the atomic number increases; evident in various physical properties of the elements and their compounds

paramagnetism: the tendency of magnetic dipoles to align with an external magnetic field; materials that exhibit this tendency become temporary magnets

diamagnetism: a weak form of magnetism that is only observed in the presence of an external magnetic field; due to an induced magnetic field in an opposite direction

ferromagnetism: The phenomenon whereby certain substances can become permanent magnets when subjected to a magnetic field.

antiferromagnetism: a phenomenon, similar to ferromagnetism, in which magnetic domains line up in a regular pattern, but with neighbouring electron spins pointing in opposite directions; materials showing this effect are either ferrimagnetic or diamagnetic, and become parama

ferrimagnetism: a form of antiferromagnetism in which some magnetization remains below a critical temperature (the Neel temperature)

ligand: An ion, molecule, or functional group that binds to another chemical entity to form a larger complex.

coordination number: the number of ligands surrounding a central metal atom in a coordination compound

metal complex: a class of compounds in which a central metal atom (normally a transition element) is surrounded by a group of ions or molecules (ligands)

monodentate: Describing a ligand that has only a single bond with the central atom

bidentate: Of a ligand, forming two separate chemical bonds to a coordinating metal ion.

polydentate: Coordinated to the central atom by several bonds; multidentate

chelating agent: Any compound that reacts with a metal ion to produce a chelate

Oxidizing agent: Any substance that oxidizes, or receives electrons from, another; in so doing, it becomes reduced.

reducing agent: Any substance that reduces, or donates electrons to, another; in so doing, it becomes oxidized.

oxyacid: An acid containing oxygen, as opposed to a hydracid.

hydracid: An acid that does not contain any oxygen as opposed to an oxyacid; they are all binary compounds of hydrogen and a halogen or pseudohalogen.

oxyanion: Any anion derived from an oxyacid

interhalogen: Any binary compound of two different halogens.

metalloid: an element, such as silicon or germanium, intermediate in properties between that of a metal and a nonmetal; especially one that exhibits the external characteristics of a metal, but behaves chemically more as a nonmetal

metal: Any of a number of chemical elements in the periodic table that form a metallic bond with other metal atoms; generally shiny, somewhat malleable and hard, often a conductor of heat and electricity.

nonmetal: an element, such as phosphorus or chlorine, that does not have the chemical or physical properties of a metal

combustion reaction: Hydrogen containing compounds that produce H2O. If it contains carbon it can create CO2, and with N can create N2.

protium: the lightest and most common isotope of hydrogen, having a single proton and no neutrons - 11H

deuterium: An isotope of hydrogen formed of one proton and one neutron in each atom - 21H.

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