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Inorganic Chemistry

The binding energy of electron in ground state of hydrogen atom is 13.6 eV.The energies required to eject out an electron from three lowest states of He+ atom will be-(in eV)
a.13.6,3.4,1.5 b.54.4,13.6,6

Profile image of Tanusri Bose
7 Years agoGrade
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1 Answer

Profile image of Aman
7 Years ago
The total energy of a uni electron system is given by:.            E= - 13.6 *(z^2/n^2),where z= atomic number of the element,n=principal quantam number of the electron
 Therefore when n=1,z=2 as in above case of He+ the total energy of the system is -54.4.
Similarly you can find the other two.
The negative sign indicates that the specific amount of energy is required to eject electron from specific state
 
 
 

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