Question

State the main postulates of john dalton's atomic theory.​

Answer 1

Explanation:

Dalton's atomic theory main postulates:

1. Atom are indivisible particles.

2. Atoms of same elements are identical while atoms of different atoms differ

3. Atoms combine with each other in a simple whole number ratio.

4. Atoms can neither be created nor be destroyed.

5. Atoms are the smallest particles that take part in the chemical reaction.

Modern atomic theory postulates which contradicted Dalton's theory:

1. Atom is made up if sub atomic particles - proton, neutron and electrons.

2. Atoms of same element may not be same in all aspects for example isotopes.

3. Atoms of different elements may not be different in all aspects for example isobars.

4. The ratio in which atoms combined may not be simple.

Answer 2

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