1. Molecules of simple atmospheric gases (construct a model of each): molecular hydrogen H2 a. HH b. molecular oxygen 02 Oo Multiple bonds usually make bonds more reactive. Notice the tension in the springs forming the double bond between the two oxygen atoms. This represents its tendency to react. C. molecular nitrogen N2 NEN Contrary to the above statement, molecular nitrogen is not especially reactive except at temperatures above 1000C. d. molecular chlorine Cl2 CICI