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A step-by-step explanation of how to draw the Cl- Lewis Dot Structure.For the Cl- structure use the periodic table to find the total number of valence electr...
The following procedure will give you the correct Lewis structure for any molecule or polyatomic ion that has one central atom. Step 1: Figure out how many electrons the molecule must have, based on the number of valence electrons in each atom.
A Lewis diagram shows how the valence electrons are distributed around the atoms in a molecule. Shared pairs of electrons are drawn as lines between atoms, while lone pairs of electrons are drawn as dots next to atoms.
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We also use Lewis symbols to indicate the formation of covalent bonds, which are shown in Lewis structures, drawings that describe the bonding in molecules and polyatomic ions. For example, when two chlorine atoms form a chlorine molecule, they share one pair of electrons:
The resulting anion, Cl −, is called the chloride ion; note the slight change in the suffix (-ide instead of -ine) to create the name of this anion. The names for positive and negative ions are pronounced CAT-eye-ons and ANN-eye-ons, respectively.
It turns out that the Na + ion has a complete octet in its new valence shell, the n = 2 shell, which satisfies the octet rule. The octet rule is a result of trends in energies and is useful in explaining why atoms form the ions that they do. Now consider an Na atom in the presence of a Cl atom.