Photons of minimum energy 496 kJ/mol are needed to ionize sodium atoms. Calculate the lowest frequecy of light that will ionize a sodium atom.

fabianmartinOTQ

fabianmartinOTQ

Answered question

2022-11-23

Photons of minimum energy 496 kJ/mol are needed to ionize sodium atoms. Calculate the lowest frequecy of light that will ionize a sodium atom. A1.24×1014 s−1 B1.24×1015 s−1 C2.48×1015 s−1 D2.48×1014 s−1

Answer & Explanation

mirandalpz9Uw

mirandalpz9Uw

Beginner2022-11-24Added 10 answers

The correct option is A 1.24×1015 s−1
Given,
The minimum energy of photon required to ionize one mole of sodium atom = 496 kJ/mol
∴ The minimum energy of photon required to ionize one sodium atom =4966.022×1023 kJ
E=hν
Hence, Energy of photon hν=496 kJ 6.022×1023
Therefore the required frequency ν=496×103(6.022×1023)(6.6×10−34)=1.24×1015 Hz

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