Which of the following is not the postulate of Dalton's atomic theory?

The postulates of Dalton's atomic theory are as follows:

• All matter is made of very tiny particles called atoms.
• Atoms are indivisible particles.
• Atoms cannot be created or destroyed in a chemical reaction.
• Atoms of different elements have different masses and chemical properties.

So the statement which is not a postulate of Dalton's theory is -  Atoms are divisible.