The energy required to break one mole of Cl - Cl bonds in Cl2 is 242 kJ mol-1. The longest wavelength of light capable of breaking a single Cl - Cl bo...

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Atomic StructureIntro, Dalton's theory, discharge tube & oil drop experiments, Rutherford scatteringMEDIUMJEE Chemistry
The energy required to break one mole of Cl - Cl bonds in Cl2 is 242 kJ mol-1. The longest wavelength of light capable of breaking a single Cl - Cl bond is (AIEEE 2010) (c = 3 $\times$ 10^{8} m s-1 and NA = 6.02 $\times$ 10^{23} mol-1) **Options:** - **A.** 594 nm - **B.** 640 nm - **C.** 700 nm - **D.** 494 nm --- **Difficulty:** MEDIUM | **Chapter:** Atomic Structure | **Topic:** Intro, Dalton's theory, discharge tube & oil drop experiments, Rutherford scattering

Official Solution

## ✅ Correct Answer: **D** ### 📖 Detailed Explanation: **Solution:** **Analyzing each option:** (A) ✗ 594 nm... (B) ✗ 640 nm... (C) ✗ 700 nm... (D) ✓ 494 nm... **Correct Answer: (D)** **Key Concept:** Apply fundamental principles of atomic structure to identify the correct option. --- *This is an official solution provided by Chem Mantra. For more chemistry questions and solutions, explore our [question bank](/courses).*

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