You may need to refer to the Data Booklet for this question. The $^{68}\text{Ge}$ isotope is medically useful because it undergoes a natural radioactive process to form a gallium isotope, $^{68}\text{Ga}$, which is used to detect tumours. This change in $^{68}\text{Ge}$ happens when an electron is captured by the nucleus, converting a proton into a neutron. Which statement about the composition of an atom of the $^{68}\text{Ga}$ isotope is correct?
- AIt has 4 electrons in its outer p subshell.
- BIt has 13 electrons in its outer shell.
- CIt has 37 neutrons.
- DIts proton number is 32.