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Hydroxide Definition Hydroxide is a negatively charged ion comprised of oxygen and hydrogen atom bonded covalently with each other. It normally attached with a positively charged metal to form a base. e.g. NaOH. In aqueous solution, these base give hydroxide ion OH–. According to Arrhenius substance that forms hydroxide ion in aqueous solution is base. … Read more

Transition Metals

Introduction to transition metal Most of the d block elements in the periodic table are transition metal elements. The following figure shows the d-block elements in periodic table. Not all the d-block elements are transition metals. Transition metals are only those d-block elements which contain unfilled d-orbital even after losing electron to form ion. Transition … Read more

Oxidation State

Oxidation State Definition Oxidation number of an atom is the charge that atom would have if the compound is composed of ions. It represents the number of electrons an atom gains or losses when bonded with other atom in a molecule. As for example the oxidation number of chromium in CrCl3 is +3. Rules to … Read more

Oxidation Reduction

Oxidation Reduction┬áReaction Definition An oxidation-reduction (redox) is a chemical reaction involving transfer of electrons between two species. An oxidation-reduction reaction is any chemical reaction where the oxidation number of a molecule, atom, or ion changes – by gaining or losing an electron. The redox reactions are very common and vital to the basic functions life, … Read more