GKFix MCQ Question

What is the approximate orbital radius of an electron in the ground state of a hydrogen atom?

• A. 5.3 x 10⁻¹¹ m
• B. 1.0 x 10⁻¹⁰ m
• C. 2.1 x 10⁻¹⁰ m
• D. 9.1 x 10⁻³¹ m