Chemical Formulae of Ions

What is the formula of sodium ion?

• Na

• Na⁺

• Na^-

• Na²⁺

What is the formula of oxide ion?

• O

• O⁺

• O^-

• O^2-

What is the formula of fluoride ion?

• F

• F⁺

• F^-

• F^2-

What is the formula of aluminium ion?

• Al

• Al⁺

• Al^3-

• Al³⁺

What is the formula of bromide ion?

• Br

• Br⁺

• Br^-

• Br^2-

What is the formula of silver ion?

• Ag⁺

• Ag^-

• Ag²⁺

• Ag^2-

What is the formula of nitrate ion?

• N^3-

• NO

• NO^3-

• NO₃^-

What is the formula of iron (II) ion?

• Fe₂

• 2Fe

• Fe²⁺

• Fe^2-

What is the formula of iron (III) ion?

• Fe₃

• 3Fe

• Fe³⁺

• Fe^3-

What is the formula of hydroxide ion?

• O

• O^2-

• OH

• OH^-