Answer:
Germanium.
Explanation:
In a neutral atom: the number of protons = the number of electrons.
Atomic number of a neutral atom = number of electrons = number of protons.
- Phosphorous is an element with atomic number 15 and thus contains 15 electrons and 15 protons.
- Cobalt is an element with atomic number 27 and thus contains 27 electrons and 27 protons.
- Germanium is an element with atomic number 32 and thus contains 32 electrons and 32 protons.
- Sulfur is an element with atomic number 16 and thus contains 16 electrons and 16 protons.
