CLASS 8 · LEARNING KNOWLEDGE
Electron pair bond – basic principles
How it works
The electron pair bond (covalent bond) arises when two atoms – usually nonmetal atoms – share one or more pairs of electrons. In this way, the atoms usually achieve a stable outer shell; hydrogen follows the duet rule. A shared pair of electrons forms a single bond, two shared pairs of electrons a double bond and three shared pairs of electrons a triple bond. In contrast to the ionic bond, the electrons are not transferred completely. This often results in molecules, but in some substances also spatial atomic networks.
Note
In an electron pair bond, two atoms – usually nonmetal atoms – share one or more pairs of electrons instead of transferring electrons completely.
In an electron pair bond, two atoms – usually nonmetal atoms – share one or more pairs of electrons instead of transferring electrons completely.
An example
Which of the following particles is connected by an electron pair bond?
The hydrogen molecule (H2) is connected by an electron pair bond because two hydrogen atoms share a pair of electrons.
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50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Chemistry. The topic assignment may vary by federal state.