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प्रश्न
What is a molecule ? Explain with an example.
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उत्तर
Molecule is the smallest particle of a substance (element or compound), which has the properties of that substance. It can exist in a free state.
Example: Oxygen atoms combine and exist in the form of O3 molecules. Solid sulphur has eight sulphur atoms joined together, and exists in the form of S8 molecule.
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संबंधित प्रश्न
Write the molecular formulae of Iron (III) sulphide:
Write the molecular formulae of Aluminium sulphate :
The valency of sodium is one, write the molecular formula for sodium carbonate ?
Write the cations and anions present, if any, in the following :
- CH3COONa
- NaCl
- H2
- NH4NO3
How many units of charge are developed on each atom?
What is the number of electrons after the transfer of electrons in magnesium and sulphur atoms.
Diagrammatically represent the transfer of electrons.
‘Atoms of the same element or different from Dalton’s atomic theory by the Modern Atomic Theory.
Give two examples each of –
- Atoms of the same element
- Atoms of different elements combining to form a molecule.
‘Dilute hydrochloric acid is added to sodium hydroxide’. Give a word equation and a molecular equation of the same. Is the equation written, a balanced equation. Give reasons.
Define molecule.
