Structure for CH-N? Since nitrogen counts as half a carbon, the number of H's if saturated is 2(6.5)+2=15. Number of missing H's is 15-7 =8. ·Elements of unsaturation is8÷2=4. => Chapter 7 10Chapter 7 10 Structure for C6H7N? • Since nitrogen counts as half a carbon, the number of H’s if saturated is 2(6.5) + 2 = 15. • Number of missing H’s is 15 – 7 = 8. • Elements of unsaturation is 8 ÷ 2 = 4. =>