The energy of the electron in the 3d-orbital is less than that in the 4s-orbital in the hydrogen atom. (JEE 1983)

## ✅ Correct Answer: **T** ### 📖 Detailed Explanation: **Solution:** **Statement:** [Given statement] **Analysis:** - Check against standard principles - Verify with known facts and rules - Look for exceptions if any **The statement is: T** **Justification:** [Based on atomic structure concepts] **Answer: T** --- *This is an official solution provided by Chem Mantra. For more chemistry questions and solutions, explore our [question bank](/courses).*