Ions

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

• 16
• 32
• 6
• 4

• 3
• 13
• 4
• 14

• 15
• 16
• 5
• 6

• Periods
• Groups

• Metals
• Nonmetals
• Metalloids

• Metals
• Nonmetals
• Metalloids

When at atom loses electrons, it becomes a(n)

• cation

• anion

• isotope

When at atom gains electrons, it becomes a(n)

• cation

• anion

• isotope

Negative ions are called

• Cations
• Electrons
• Anions
• Neutrons