A. 0
B. 3
C. 4
D. 5
🧠 Explanation:
Hydrogen, specifically protium, has zero neutrons, with one proton and one electron in its nucleus. This simple structure makes it the lightest element, fundamental to chemistry and physics. Its lack of neutrons distinguishes it from isotopes like deuterium, impacting its behavior in reactions. Understanding hydrogen’s composition is crucial for studying atomic structures, chemical bonding, and applications like hydrogen fuel cells. Its role in energy and scientific research makes it a key topic, illustrating the importance of elemental properties in advancing technology and environmental solutions.
