Question

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

• A. Atoms are composed of negatively charged electrons revolving around an oppositely charged cloud
• B. Atoms can neither be created nor be destroyed
• C. Atoms of different elements have different atomic weights
• D. There are many kinds of atoms as there are elements

Answer 1

The correct option is A Atoms are composed of negatively charged electrons revolving around an oppositely charged cloud

Some of the postulates of Dalton's atomic theory are given below:

• All matter is made up of tiny indivisible particles known as atoms.
• Atoms can neither be created not be destroyed.
• Atoms of a given element have identical mass and chemical properties.
• Atoms of different elements have different masses and chemical properties.
• Atoms of different elements combine in simple integral ratios to form compounds.
• It is the atom in an element that takes part in a chemical reaction.
• Atoms of different elements can be hold apart by their atomic weight.