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.
Valence electrons by definition are the number of electrons in the valence shell. The atomic number of Chlorine is 17. Hence the configuration of electrons would be 2,8,7. Hence the number of valence electrons in Chlorine is 7. However if you talk about valency that would be number of electrons an atom has to gain/loose to achieve the stable state.