A physical change is when something don't permanently change
Answer:
E. Thomson
Explanation:
J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons.
https://www.khanacademy.org/science/chemistry/electronic-structure-of-atoms/history-of-atomic-structure/a/discovery-of-the-electron-and-nucleus
Answer:
B. The s orbital and two p orbitals
Explanation:
Explanation:
Hope the picture with the working out helps :)