Question

what is atomic theory​

Answer 1

★ ll ATOMIC THEORY ll ★

The theory that ' all the matter is made up of very tiny indivisible particles is called atomic theory.

➠ This theory is given by Dalton in 1808.

Dalton's atomic theory of Matter are as follows:

• All the matter is made up of very small particles called atoms.

• Atoms are indivisible .

• It can neither be created nor be destroyed.

• The number and kind of atoms in a given compound is fixed.

• Atoms of same elements are identical in every respect.

• Atoms of different elements are differ in every respect.

Drawbacks of Dalton's atomic theory:

➠ Dalton's atomic theory of matter said that atoms are indivisible but discover of electrons, Protons and neutrons that atoms can be further divided into still smaller particles.

➠ Dalton's atomic theory said that all the atoms of an element have exactly the same mass But discover of isotopes.This theory proved wrong because atoms of same element can have slightly different masses.

➠ Dalton's atomic theory said that the atoms of different elements have different masses but discover of isobars. This theory also proved wrong because even atoms of different elements can have the Same mass.

Answer 2

QUESTION -

What is atomic theory?

ANSWER -

dalton atomic theory proposed that - - >

• all the matter is made up of tiny particles called atoms.

• atoms of same element have identical property.

• atoms of different element have different properties.

• atom is indivisible particles.

• it combines with each other in fixed proportions to form compounds.