A fishing sinker was placed in a beaker that originally contained 125 ml of water. After placing the sinker in the beaker the water level rose to 150 ml. The sinker was placed on a scale and its mass was 200 g. What is the density of the sinker?

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