A. 01
B. 05
C. 07
D. 09
🧠 Explanation:
The atomic number of hydrogen is 1, defining its elemental properties. For chemistry students, this highlights atomic structure, making it a key topic for studying chemistry, physics, and material science. Hydrogen is fundamental. Understanding this ensures knowledge of elemental behavior. It’s essential for analyzing chemistry, physics, and science. Studying hydrogen’s atomic number offers insights into how elements are classified, crucial for chemistry, physics, and material science.
