Answer: B.the molecule contains different kinds atoms
Step-by-step explanation:
Let's go through each choice.
A.when the molecule reacts new atoms are created
Both quantum model of the atom and John Dalton's model recognize that the atoms are not either created or destroyed in a chemical reation, so when a molecule reacts it forms one or more new molecules with the same atoms of the original molecule.
B. the molecule contains different kinds atoms
Indeed, John Dalton's model already considered that the compounds (molecules) are formed by the combination of different kinds of atoms. This is valid nowadays under the quantum model.
C. the nucleus is located in the center of the molecule
Firstly note that John Dalton's model did not consider the existence of a nucleus as the atom was thought to be indivisible. Secondly, quantum model considers that the nucleus is at the center of the atom, not of the molecule.
D. electrons are located at specific locations in the molecule.
John Dalton's model did not consider that the existence of electrons, since, as already said, the atoms was considered indivisible. Regarding quantum model, electrons are not located at specific locations but the model states the probability of finding the electrons in certain regions. The regions with high probability of containing the electros are called orbitals.