Medication Summary. Topical antibiotics, systemic antibiotics, or a combination of both is effective therapy for impetigo. Empiric bacterial coverage is aimed at eradicating Staphylococcus aureus and group A beta-hemolytic streptococci (GABHS; also known as Streptococcus pyogenes).
In chemistry, the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules. The concept of valence was developed in the second half of the 19th century and was successful in explaining the molecular structure of inorganic and organic compounds.
Lithium and potassium have only one valence electron each. A  valence electron is an unpaired electron available for bonding with  other elements. Since lithium and potassiuâ¦m have only one valence  electron each, they are pretty stable elements that don't do a lot  of bonding.