Each of the four valencyelectrons of the carbon atom is Shared with one of a hydrogen atom.
碳原子的四个价电子都各与氢原子的一个价电子共用。
2
Each of the four valencyelectrons of the carbon atom is shared with one of a hydrogen atom .
碳原子的四个价电子都各与氢原子的一个价电子共用。
3
The idea was suggested by the chemical theory of valency in which one is used to the idea of electrons in an atom forming closed shells which do not contribute at all to the valency.