Propose a molecular formula for a compound that has one degree of unsaturation and a mass spectrum that displays a molecular ion signal at m/z = 86. Example: Enter your answer in the form CaHbNcOd

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