Question

What new characteristic did John Dalton add to the model of the atom?

1. An atom is a round, solid mass.
2. An atom has a massive, positive center.
3. An atom is made up of smaller particles.
4. An atom can join with other kinds of atoms.

Answer 1

4 is the correct answer since that belongs to one of his postulates.

Answer 2

The correct option is 3

Step-by-step explanation:

From the theory that he postulated that

• Elements are made up of extremely small particles called atoms