Which of the following statements is true? flammability is a chemical property. modern chemical symbols were created by dimitri mendeleev. compounds usually have the same properties as the elements they are made from. all of the above.

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