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Structure Of Atom

Question
CBSEENCH11005258
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Calcualte the energy of one mole of photons of radiation whose frequency is 5 x 1014Hz.

Solution

Energy (E) of one photon = hv
Here,    h = 6.626 x  10-34 Js
            v = 5 x 1014 s-1
therefore space space straight E space equals space left parenthesis 6.626 space cross times space 10 to the power of negative 34 end exponent Js right parenthesis cross times left parenthesis 5 cross times 10 to the power of 14 straight s to the power of negative 1 end exponent right parenthesis space space space equals space 3.313 space cross times 10 to the power of negative 19 end exponent straight J therefore space space Energy space of space one space mole space of space photons space space space space space space equals space left parenthesis 3.313 space cross times space 10 to the power of negative 19 end exponent straight J right parenthesis space cross times left parenthesis 6.022 space cross times space 10 to the power of 23 space mol to the power of negative 1 end exponent right parenthesis space space space space space space space equals 199.51 space kJ space mol to the power of negative 1 end exponent

Some More Questions From Structure of Atom Chapter

Why were neutrons discovered very late?

What are the fundamental particles present in a neutral atom having atomic number greater than 1?

Do protons and neutrons have identical mass?

When α-particles are sent through a thin metal foil, most of them go straight through the foil. What inference do you draw from it?

What did Rutherford's experiment on scattering of particles show for the first time?

What is Plum-Pudding model of the atom?

Are neutrons present in all atoms?

Why are electrons called planetary electrons?

What are nucleons?

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