Covalent bond A chemical bond in which one or more pairs of electrons are shared between two atoms.
Covalent bond A chemical bond in which one or more pairs of electrons are shared between two atoms.
共价键：一般指两个原子接合时，通过形成共有电子对而产生的化学键。
Covalent bond A chemical bond in which one or more pairs of electrons are shared between two atoms.
共价键：一般指两个原子接合时，通过形成共有电子对而产生的化学键。