how do chemicals affect the enviornment? A. they work together with the enviornment B. they can both hurt and help the enviornment C. they only help the enviornment D. they only hurt the enviornment

With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals