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A helium atom consists of two electrons orbiting round a nucleus of charge Z=2.But the electrons do not see the full charge Z=2 of the nucleus.Each electron sees the nucleus slightly screened by the other electrons so that the effective charge Z eff seen by each electron is less than 2.The ionisation potential for a He atom in its ground state is measured experimentally to be 24.46eV.Estimate the effective charge of the nucleus as seen by each electron in the helium ground state. plz xplain it clearly.


A helium atom consists of two electrons orbiting round a nucleus of charge Z=2.But the electrons do not see the full charge Z=2 of the nucleus.Each electron sees the nucleus slightly screened by the other electrons so that the effective charge Zeff seen by each electron is less than 2.The ionisation potential for a He atom in its ground state is measured experimentally to be 24.46eV.Estimate the effective charge of the nucleus as seen by each electron in the helium ground state.
 
plz xplain it clearly.


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