Complete one rotation.
Hope this helps.
3 ..............................
The answer to your question is D. hope this helps
-dabs-
Thomson's model of the atom was called the plum pudding model. He discovered electrons, so he placed them in the atoms. This was before the nucleus was discovered.
Now, the current model is an atom that contains a positively charged nucleus (with both protons and neutrons), and negatively charged orbitals with electrons.
