Question

The feature of Dalton's Atomic Theory that states: "all atoms of each element are identical every respect is not considered valid today, True or False?

Answer 1

`\text{False}`

Step-by-step explanation:

Here, we want to see if this assumption by Dalton is true or false within the present-day knowledge

During the time when Dalton was building his theory, the existence of isotopes was unknown. Isotopes are different kinds of the same element. Thus, we have it that we can have different atom types of the same element.

Hence, atoms of the same element are not the same in every respect