What states that atoms tend to gain, lose or share electrons until they are surrounded by eight valence electrons?

1 Answer
Aug 27, 2016

The "octet rule", which is more a rule of thumb than an actual chemical principle.

Explanation:

Main-group elements tend to form compounds in which the participating atoms are surrounded by "8 electrons". There are many exceptions to the rule, but often we can rationalize the chemistry of the exceptions in terms of filling the valence shell of the participating atoms with 8 electrons.