Answer: Germanium
Explanation:
In a neutral atom, the number of protons is equal to the number of electrons.. Atomic number of a neutral atom = number of electrons = number of protons
1. Phosphorous is an element with atomic number 15 and thus contains 15 electrons and 15 protons.
2. Cobalt is an element with atomic number 27 and thus contains 27 electrons and 27 protons.
3. Germanium is an element with atomic number 32 and thus contains 32 electrons and 32 protons.
4. Sulfur is an element with atomic number 16 and thus contains 16 electrons and 16 protons.
