Advertisements
Advertisements
प्रश्न
Name the elements water is made of. What are the valencies of these elements ? Work out the chemical
formula for water.
Advertisements
उत्तर
Water (H2O) is made of Hydrogen and Oxygen.
Valency of Hydrogen is 1, and valency of Oxygen is 2.
Valency of one Hydrogen atom = 1
Valency of one Oxygen atom = 2
Therefore, to balance the valency of Oxygen atom, 2 atoms of Hydrogen atoms are required.
Hence, 2 atoms of Hydrogen will combine with 1 atom of Oxygen to form one molecule of water with the chemical formula H2O.
APPEARS IN
संबंधित प्रश्न
What do the following abbreviations stand for ?
- O
- 2O
- O2
- 3O2
Define ‘formula unit’ of an ionic compound. What is the formula unit of (i) sodium chloride, and
(ii) magnesium chloride ?
Write the formula of the following compound:
Calcium hydroxide
Write the formula of the following compound:
Iron [III] sulphate
Write the molecular formulae for the following compounds
Calcium (II) phosphate
There are ______ hydrogen atoms in water molecule.
There is ______ oxygen atom is water molecule.
Derive the chemical formula for calcium chloride.
