Question

Write the postulates of Dalton’s atomic theory.

Answer 1

1. All matter are made up extremely small particles known as atoms
2. Atom can neither be created nor be destroyed in a chemical reaction
3. Atoms always combine in a fixed proportion by mass
4. The kind and no. of atom in a given compound is always constant
5. Atoms always combine in simple whole no.
6. Atoms of same element are identical in all aspects.
7. Atoms of different elements are different in all aspects

Answer 2

Answer:

The main postulates of Dalton's atomic theory are:

1. Matter consists of very small and indivisible particles called atoms.

2. Atoms can neither be created nor be destroyed.

3. The atoms of an element are alike in all respects but they from thevatoms of other elements.

4. Atoms of an element combine in small numbers to form molecules.

5. Atoms of one element combine with atoms of another element in a simple ratio to form molecules of compounds.

6. Atoms are the smallest units of matter that cam take part in a chemical reaction.

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