Verified Solution • 2025–26 Session moderate

QJEEM24Cha384: JEE Main 2024 Chemistry - Class 11 JEEM24Cha384 Solution: The ionization energy of sodium in   kJ   mol − 1 ,…

The ionization energy of sodium in  kJ mol−1, if electromagnetic radiation of wavelength 242 nm is just sufficient to ionize sodium atom is _______.

Step-by-Step Verified Solution

E=1240λ(nm)eV=1240242eV=5.12eV=5.12×1.6×10−19=8.198×10−19 J/ atom =494 kJ/mol

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