10) D
In the hydrocarbon shown, there are 10 carbon atoms and 18 hydrogen atoms. We cannot double count the corners in the middle (since there is an overlap).
(12 x 10) + (18 x 1) = 138
10) D
In the hydrocarbon shown, there are 10 carbon atoms and 18 hydrogen atoms. We cannot double count the corners in the middle (since there is an overlap).
(12 x 10) + (18 x 1) = 138