Long Answer TypeHow Dalton's atomic theory was modified on the basis of modern reseraches? or Give various postulates of modern atomic theory.
What do you understand by atom and molecule?
Molecule: Molecule is the smallest particle of a substance (element or compound) which is capable of independent existence. The molecules are formed by the combination of two or more atoms. In case the atoms happen to be the same, the molecules are called homoatomic molecules (e.g. O2, N2, H2 etc.). In case atoms happen to be different, the molecules are known as heteroatomic molecules (e.g. NH3, CO2, SO2 etc.).
Define Avogadro’s law. Taking a suitable example, prove that it is not in contradiction with Dalton’s atomic theory.
Short Answer TypeLong Answer TypeShort Answer TypeCalculate the atomic mass(average) of chlorine using the following data:
| %Natural Abundance | Molar mass | |
| 35Cl | 75·77 | 34·9689 |
| 37Cl | 24·23 | 36·9659 |
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