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Factors Affecting Ionisation Energy

Energy requir...

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Energy required to dislodge electron frrom excited isolated H atom ? Ionisation Energy : 13.6eV 13.6 >13.6 <3.4and >13.6 =<3.4 EV

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Q. The energy required to dislodge electron from excited isolated H-atom,

I E_{1} = 13.6

Q. The energy required to dislodge electron from excited isolated hydrogen atom(IE1=13.6eV).
A)=13.6ev B)>13.6 C) <13.6 and >3.4 D)less than or equal to 3.4eV
The answer is D but how if i assume that the electron is at the second energy state(n=2) its energy would be -3.4eV so we should give either 3.4ev or more than that

Q. If the ionisation energy for H atom is

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Q. If the binding energy of the electron in a hydrogen atom is 13.6 eV, the energy required to remove the electron from the first excited state of

L i^{+ +}

Q. If the ionisation energy for H atom is

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