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Question
‘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.
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Solution
Atoms of the same element or different elements combine to form a molecule.
Atoms of different elements forming a molecule
A molecule is the smallest particle of a pure substance – element or compound
- which can exist independently and
- retain the physical & chemical properties of the substance.
| Elements of same kind | Molecule of elements |
| Hydrogen atom |
Hydrogen molecule
|
| Nitrogen atom |
Nitrogen molecule
|
| Elements of same kind | Molecule of elements |
| Hydrogen [2 atoms] |  |
| Oxygen [1 atom] | water molecule |
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