Cations, Anions and Ionic Compounds

What is the formula of the Sodium ion?

• Na²⁺

• Na⁺

• K⁺

• Ca²⁺

What is the formula of the Aluminium ion?

• Al⁺

• Al²⁺

• Al³⁺

• Al⁴⁺

What is the formula of the Oxide ion?

• O⁻

• O²⁻

• O₂⁻

• OH⁻

What is the formula of the Iron(III) ion?

• Fe²⁺

• Fe⁺

• Fe³⁺

• Fe⁴⁺

What is the formula of the Cyanide ion?

• CN⁺

• CNO⁻

• CN⁻

• CO₃²⁻

What is the formula of the Ammonium ion?

• NH₃

• NH₄⁺

• NH₂⁻

• NO₃⁻

What is the formula of the Copper(II) ion?

• Cu⁺

• Cu²⁺

• Cu³⁺

• Cu⁻

What is the formula of the Fluoride ion?

• Fl⁻

• F⁺

• F⁻

• F₂⁻

What is the formula of the Barium ion?

• Ba⁺

• Ba²⁺

• Ba³⁺

• Ba⁴⁺

What is the formula of the Dichromate(VI) ion?

• CrO₄²⁻

• Cr₂O₇²⁻

• Cr₂O₄⁻

• CrO₃⁻