Valence Electrons and Ions

These flashcards cover the concepts of valence electrons, ions, and the stability of atoms necessary for understanding chemical bonding.

Valence Electrons

Electrons in the outermost shell of an atom that determine its chemical behavior.

Electron Dot Symbol

A representation of valence electrons around an element's symbol, using dots.

Duet Rule

Atoms are most stable with two electrons in their outermost shell.

Octet Rule

Atoms are most stable with eight electrons in their outermost shell.

Noble Gases

Elements that have a complete outer shell of electrons and are very stable.

Cation

A positively charged ion formed when an atom loses electrons.

Anion

A negatively charged ion formed when an atom gains electrons.

Lewis Dot Structure

A diagram that shows the bonding between atoms and the lone pairs of electrons in a molecule.

Stability of Atoms

Atoms are most stable when they achieve a full outer shell of electrons, either by losing or gaining electrons.