Writing Lewis Structures for Molecules

Submitted by ChemPRIME Staff on Thu, 12/16/2010 - 12:35

Because Lewis diagrams are widely used to describe the structures of molecules, it is important that you be able to construct them. The first step in this process is to draw a skeleton structure to show which atomsThe smallest particle of an element that can be involved in chemical combination with another element; an atom consists of protons and neutrons in a tiny, very dense nucleus, surrounded by electrons, which occupy most of its volume. are linked to which. Next, determine how many valence electrons are available by adding the periodic groupThose elements that comprise a single column of the periodic table. Also called family. numbers for all atoms in the molecule. Audemars Piguet Royal Finally, allocate the available electrons either as shared pairs or as lone pairs so that each atom has an octetA stable set of eight electrons in the valence shell of an atom. Each noble-gas atom has an octet. (or in the case of H, a 1s2 pair).IWC replica Réplica de reloj

Deciding on a Skeleton Structure

Multiple Bonds

An Excess of Bonds