John dalton believed which of the following about atoms? atoms are real even though they're invisible. all atoms of a single substance are identical. the atom could be divided into smaller parts. atoms of different substances differ by weight.

IT IS THE FIRST AND SECOND AND LAST.

atoms are real even though they’re invisible

All atoms of a single substance are identical.

Atoms of different substances differ by weight

6.4 cm (max) - 25 cm (min)

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).