JEE Main 2010 — Structure Of Atom Question with Solution
From: AIEEE 2010
Question
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
(c = 3 x 108 ms–1 and NA = 6.02 x 1023 mol–1)
(c = 3 x 108 ms–1 and NA = 6.02 x 1023 mol–1)
Choose an option
Show full solutionCorrect option: D
Correct answer
D494 nm
Step-by-step explanation
Energy required to break one Cl2 molecule = J
As E =
So
=
= 494 10-9 m
= 494 nm
As E =
So
=
= 494 10-9 m
= 494 nm
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This is a previous-year question from JEE Main 2010, covering the Structure Of Atom chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.