To remove an electron from the first orbit to infinity of hydrogen atom, the amount of energy required will be:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 13.6 eV
Energy Needed $(ΔE)=E_f-E_i$
$=E_∞-E_1$
$=0-(-13.6)=13.6eV$
as, At $n=∞$, the energy $E_∞=0eV$