Valencies, Chemical Formulae Quiz

What is the valency of Aluminium?

• Al+1

• Al-2

• Al+3

• Al-3

H2SO4 contains 4 atoms of

What is the valency of Oxygen?

• O-1

• O-2

• O-3

• O-4

Which element has a valency of +1?

• Na

• Cl

• Ca

• Fe

What is the valency of Nitrogen?

• N-1

• N-2

• N-3

• N-4

What is the formula of Sodium hydroxide

• Na2OH3

• NaOH2

• OHNa

• NaOH

What is the formula of Hydrochloric acid?

• HCl

• H2O

• HCN

• HF

What is the formula of Potassium hydroxide?

• KOH

• K2O

• KOH2

• KO2

What is the formula of Sulfuric acid?

• H2SO3

• H2SO4

• H2S2O7

• H2S2O8

Write the compound made by Sodium and Sulfate with symbol and valencies by criss cross method.

• Na+4 x SO-2

  = Na2(SO)4

• Na+1 x SO4-2

  = Na2SO4