Number 3. c.
Number 4. a.
Number 5. d.
All nuclear chemistry revolves around changing the identity of base elements.
The answer is the third statement.
Because nuclear chemistry is changing base elements' identities, the atomic number/number of protons is what is changing. While the number of electrons can change, your question is too general to know whether electrons are going to be gained, lost, or retained in the reaction.
Answer:
The chemical formula for potassium sulfide is K2 S. Sulfur atoms need two electrons to fill their 3p electron orbitals.
Explanation:
