Organic Compounds (rules)

Puzzles
#1

can someone explain why in the fifth test the compound is valid?

CH2(2)CH0(1)CH1(2)CH0(1)CH3
(1) (1)
CH0 CH1(1)CH2(1)CH3
(3) (1)
CH1 CH3

The very first hydrocarbon has 5 bonds!?!?!? :thinking::roll_eyes:

#2

5 posts were merged into an existing topic: [Community Puzzle] Organic Compounds :microscope:

#6

2 posts were merged into an existing topic: [Community Puzzle] Organic Compounds :microscope:

#7
#8