Advertisements
Advertisements
प्रश्न
What is meant by a chemical formula ? Write the formulae of one element and one compound.
Advertisements
उत्तर
A chemical formula is an expression that denotes the number and types of atoms present in a molecule of a substance. It is a representation of the composition of a molecule, in terms of the elements present, using their symbols.
For example: O2 is the chemical formula of the element oxygen. Therefore, one molecule of oxygen comprises two atoms.
CO2 is the chemical formula of the compound carbon dioxide. It consists of one atom of carbon and two atoms of oxygen.
APPEARS IN
संबंधित प्रश्न
Name the element in the compound and give the formula of the following compound:
Phosphoric acid
Write the formula of the following compound:
Potassium plumbite
Write the formula of the following compound:
Sodium iodide
Write the formula of the following compound:
Zinc chloride
Write the formula of the following compound:
Copper [I] oxide
Write the formula of the following compound:
Copper [II] sulphide
Write the formula of the following compound:
Tetra amine copper [II] sulphate
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaO
