Writing Ionic Formulas

How do the following two elements bond together?
Na¹⁺  F^1-         

• NaF
• NaF₃
• Na₃F
• Na₁F₂

Tags

NGSS.MS-PS1-1

How do the following two elements bond together?
Cr³⁺  O^2-         

• CrO
• Cr₃O₂
• Cr₂O₃
• CrO₃

Tags

NGSS.MS-PS1-1

Cu ⁺²  and  OH ^-

• CuOH₂
• Cu₂OH
• Cu(OH)₂
• correct answer is not given

Tags

NGSS.HS-PS1-2

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

• AlO
• Al₂O₃
• Al₃O₆
• Al₃O₂

Tags

NGSS.MS-PS1-1

NH₄⁺¹ and C₂O₄^-2

^{*Don't forget to use parentheses}

• NH₄C₂O₄

• (NH₄)₂C₂O₄

• NH₄(C₂O₄)₂

• correct answer is not given

What is the formula for manganese(III) oxide?

• MgO
• Mg₂O₃
• MnO
• Mn₂O₃

Tags

NGSS.HS-PS1-2

What is the correct formula for the compound, lithium oxide?

• LiO
• Li₂O
• LiO₂
• Li₂O₂

Tags

NGSS.MS-PS1-1

The formula of calcium phosphate is 

• CaPO₄
• Ca₂(PO₄)₃
• Ca₃PO₄
• Ca₃(PO₄)₂

The chemical compound for sodium phosphate would be:

• NaPO₄
• Na₂PO₄
• Na₃PO₄
• Na(PO₄)₃

Tags

NGSS.MS-PS1-1

The chemical formula of Iron (III)bromide is

• FeBr
• Fe(III)Br
• FeBr₃
• Fe₂Br₃

Tags

NGSS.MS-PS1-1