1. IONS
Big Idea
• Atoms can gain or lose electrons to
form charged particles called IONS
2. Orbitals
• Each electron in an atom has a definite amount
of energy.
• Orbitals that are FULL of electrons are most
stable.
• What neutral atom has this many electrons?
3. What are Ions?
• Atoms are neutral particles because they
have the same number of positive protons
and negative electrons.
• An ion is a charged particle.
• An ion is formed when an atom gains or
loses electrons.
4. Forming Ions
Na vs Na+1
Formed by
losing negative
electrons
Positive Ion
= cation
F vs F-1
Formed by
gaining negative
electrons
Negative Ion
= anion
Example
How Formed?
Type of Ion