Aluminium hydroxide formula

Chemical Formula Of Common Compounds The chemical formula of a compound is a symbolic representation of its chemical composition. Chemical formulae provide insight into the elements that constitute the molecules of a compound and also the ratio in which the atoms of these elements combine to form such molecules. For example, the chemical formula of water, which is H 2O, suggests that two hydrogen atoms combine with one oxygen atom to form one molecule of water. Table of Contents Importance of Chemical Formulae • Chemical formulae provide insight into the chemical composition of a compound. • They also represent the ratios in which the constituent elements combine to form the compound. • The chemical formula of a compound is crucial while representing it in a chemical equation. • Chemical formulae can also be employed to represent ions, free radicals and other chemical species. Types of Chemical Formulae While the term ‘chemical formula’ typically refers to the molecular formula of a compound (which denotes the total number of atoms of each constituent element in one molecule of the compound), the compositions of chemical compounds can be expressed in several ways, as listed in this subsection. Molecular Formula: The molecular formula provides insight into the number of elements present in a compound. In molecular formulae, the elements are denoted by their respective symbols (as in the periodic table) and the number of atoms of each element in the molecule is written in su...

Aluminum has a chemical symbol of #Al#, with a charge of 3+. Hydroxide is a molecule consisting of two #OH^(1-)#. Aluminum is the cation, while hydroxide is the anion, thus we get #Al(OH)_"3"#. This is because we still "criss-cross" the charges as it is an ionic compound - electrons are transferred - so aluminum's charge of 3+ goes to hydroxide while its charge of 1- goes to aluminum. The 1 is redundant so we don't write it in. Hope this helps :)

\( \newcommand_3 \] Bibliography • K. Wefers and C. Misra, Oxides and Hydroxides of Aluminum, Alcoa Laboratories (1987). • H. L. Wen and F. S. Yen, J. Cryst. Growth, 2000, 208, 696. • G. K Priya, P. Padmaja, K. G. K. Warrier, A. D. Damodaran, and G. Aruldhas, J. Mater. Sci. Lett., 1997, 16, 1584. • E. Prouzet, D. Fargeot, and J. F. Baumard, J. Mater. Sci. Lett., 1990, 9, 779.