
What is the binding energy of the electron in kJ/mol? [Note that KE = 12mv2 and 1 electron volt (eV) = 1.602×10−19J.] 
ans)
from above data that
we know that
Photon Energy = E = h*c/λ
we know that =h= (6.6261e34)
c=3.0e+8
λ =0.0943e9
substitue all values in above equation
= (6.6261e34)*(3.0e+8)/(0.943e9)
= 2.11 e16 Joules
Kinetic Energy Of Emitted Electron = K
=
(934)*(1.602e19)
= 1.496e16
Joules
Binding Energy Per Electron = E  K
= (2.11
e16)  (1.496 e16)
= 6.14 e17
Joules
we have to calculate the
Electron Binding Energy Per Mole
= (6.14 e17)*(6.0221e+23)
= 36975
kJ/mole
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