Dalton hypothesized that atoms are indivisible and that all atoms of an element are identical. it is now known that a) all of dalton's hypotheses are correct. b) atoms of an element can have different numbers of protons. c) atoms are divisible. d) all atoms of an element are not identical but they must all have the same mass

It is now known that ATOMS ARE DIVISIBLE.
Contrary to Dalton hypothesis that says that atoms are indivisible, it has now been discovered that atoms are actually divisible. Each atom of an element is made up of three sub atomic particles, which are protons, neutrons and electrons. The protons and the neutrons are located in the nucleus of the atom while the electrons orbit round the nucleus. The proton is positively charged, the electron is negatively charged and the neutron has no charge.