Question

list the limitation of Daltons atomic theory in the light of modern

Answer 1

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⚪⚫〰DALTON'S ATOMIC THEORY v/s MODERN ATOMIC THEORY〰⚫⚪
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1. ] Atom is the smallest Indivisible particle that cannot be divided further .
But later on the Sub Atomic particles of the Atom :- Electrons , Neutrons and protons were discovered and hence the postulate of Dalton was proved wrong !


2]. Atoms of same element are same in all aspects and of different are different in all respects but this was also proved wrong by the discovery of Isotopes and Isobars .

3] Atoms always combine in Simple Whole number ratio to form compounds but again Modern Atomic Theory says that the ratio is not always simple ; it can be integral . For example Sucrose .


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Answer 2

LIMITATIONS

• The matter is made up of indivisible particles known as atoms.
• The properties of all the atoms of a given element are the same including mass. This can also be stated as all the atoms of an element have identical mass while the atoms of different elements have different masses.
• Atoms of different elements combine in fixed ratios to form compounds.
• Atoms are neither created nor destroyed. This implies that during chemical reactions, no atoms are created nor destroyed.
• The formation of new products (compounds) results from the rearrangement of existing atoms (reactants).
• Atoms of an element are identical in mass, size and many other chemical or physical properties, but atoms of two-different elements differ in mass, size, and many other chemical or physical properties.