In a hydrogen atom the energy of an electron in 1st bohr's orbit is 13.12*10^5 j/ mol
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In general, according to Bohr's model, energy of an electron of hydrogen Atom, in n= n is En=-13.6/n^2 eV/electron………….(1)
But 1 eV=1.6x10^-19J.=1.6x10^-19 (J/mol)mol……….(2)
But, mol=6.023x10^23 electron………(3)
Using (2) and (3) in equation (1),
En=-(13.6/n^2)x10^5 J/mole
E1=-13.6 x10^5 J/mol and taking n=2,
E2=-(13.6/4) x10^5 J/mol
But 1 eV=1.6x10^-19J.=1.6x10^-19 (J/mol)mol……….(2)
But, mol=6.023x10^23 electron………(3)
Using (2) and (3) in equation (1),
En=-(13.6/n^2)x10^5 J/mole
E1=-13.6 x10^5 J/mol and taking n=2,
E2=-(13.6/4) x10^5 J/mol
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