Advertisements
Advertisements
प्रश्न
Write the formula of the following compound:
Aluminium oxide
Advertisements
उत्तर
Aluminium oxide - Al2O3 - `"Al"^(3+)["O"]^(2-)`
APPEARS IN
संबंधित प्रश्न
Write down the formula of aluminium chloride.
Write the chemical formula of the Calcium carbonate.
An element X of valency 3 combines with another element Y of valency 2. What will be the formula of the compound formed ?
Give the formulae of the compounds formed from the following sets of elements :
- calcium and fluorine
- hydrogen and sulphur
- nitrogen and hydrogen
- carbon and chlorine
- sodium and oxygen
- carbon and oxygen
The formula of a compound is X3Y. The valencies of elements X and Y will be respectively :
Give the empirical formula of : Benzene C6H6
Give the empirical formula of Glucose C6H12O6 .
Name the element in the compound and give the formula of the following compound:
Blue vitriol
Name the element in the compound and give the formula of the following compound:
Glauber’s salt
Name the element in the compound and give the formula of the following compound:
Ethane
Write the formula of the following compound:
Sodium plumbite
Write the formula of the following compound:
Calcium bisulphite
Write the formula of the following compound:
Zinc chloride
Write the formula of the following compound:
Zinc nitrate
Write the formula of the following compound:
Aluminium hydroxide
Write the formula of the following compound:
Copper [I] oxide
What is a chemical formula?
Derive the chemical formula for calcium chloride.
Play a game for writing formula.
Example 1: Make placards with symbols and valencies of the elements separately. Each student should hold two placards, one with the symbol in the right hand and the other with the valency in the left hand. Keeping the symbols in place, students should criss-cross their valencies to form the formula of a compound.
