The calcium isotopes shown are $^{40}_{20}\text{Ca}$ and $^{44}_{20}\text{Ca}$. Which statement accounts for the fact that these calcium isotopes have the same chemical properties?
- ABoth isotopes have the same number of neutrons.
- BBoth isotopes have an electronic configuration of 2,8,8,2.
- CBoth isotopes have a mass number of 20.
- DBoth isotopes have four fully occupied electron shells.