Write the names and formulae of any two ores of iron

Write the names and formulae of any two oxyacids of sulphur. Indicate the oxidation state of sulphur in them.

Write the names and formulae of any tow minerals of Cu. How is the Cu extracted ?

How do the alkali metals occur in nature? Give the names and formulae of any two minerals of an alkali metal.

Write the names and formulae of the hydrides of oxygen.

Write the names and formulae of the oxoacids of chlorine. Explain their structures and relative acidic nature.

Write the names of any two ores of iron?

Write the name and formula of the first noble gas compound prepared by Bertlett.

Write any two uses of argon.

Write the names of any two liquid fuels.

Write the names of any two compounds which have ionic bond.