A negatively-charged ion.

• atom
• cation
• anion
• electron

An atom that has lost or gained electrons; an atom with a charge.

• cation
• anion
• isotope
• ion

Cations are

• positive
• negative
• on the right side of the periodic table.
• nonmetals

Na ⁺  and  S ^-2

• Na₂S
• NaS₂
• Na₂S₂
• NaS

Tags

NGSS.MS-PS1-1

K ⁺  and  N^-3

• KN
• KN₃
• K₃N₃
• K₃N

Tags

NGSS.MS-PS1-1

The chemical formula for an ionic compound of potassium and oxygen is

• KO.
• K₂O.
• K₂O₂.
• KO₂.

Tags

NGSS.MS-PS1-1

How do the following two elements bond together?
Al³⁺  O^2-         

• AlO
• Al₂O₃
• Al₃O₆
• Al₃O₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What would be the proper chemical formula for combining Al³⁺ and l^- :

• Al l₃
• Al₃l
• Al l
• Al₃ l₃

Tags

NGSS.MS-PS1-1

What formula results when Ca⁺²  and  Br^- ions bond?

• Ca₂Br₂
• CaBr
• Ca(br)₂
• CaBr₂

Tags

NGSS.MS-PS1-1

What is the correct ionic formula for sodium chloride?
Sodium = Na
Chlorine = Cl

• Na₁Cl₁
• Na₁Cl₂
• Na₂Cl
• NaCl