How many hydrogen atoms are assumed at each of the three carbon atoms designated by A , B and C respectively in the following line-angle drawing?

Question

Quizplus · Accepted Answer

Each carbon atom in the line-angle drawing is assumed to have four bonds, and each bond represents one atom. Carbon atom A is bonded to two other carbon atoms and one hydrogen atom, meaning it has only one remaining bond, which must be bonded to a hydrogen atom. Carbon atom B is bonded to two other carbon atoms and two hydrogen atoms, meaning it has no remaining bonds. Carbon atom C is bonded to two other carbon atoms and one hydrogen atom, meaning it has one remaining bond, which must be bonded to a hydrogen atom. Therefore, the assumption is that A has 1 hydrogen atom, B has 2 hydrogen atoms, and C has 0 hydrogen atoms. The correct answer is D.

How Many Hydrogen Atoms Are Assumed at Each of the Three