Question

The enegy recunied to remone eleteon foom The pohr's oebit is ( t_{1}=13.6 mathrm{eV} )
Which is ( 2.179 times 10^{-18} mathrm{J}left[mathrm{ieV}=1.6021 times 10^{-19} mathrm{J}right] )
The cakerponding wavelength b
[
begin{array}{c}
E=frac{h C}{lambda}
lambda=frac{h c}{E}=frac{left(6.63 times 10^{-34} 55right) timesleft(3 times 10^{8} mathrm{m} / mathrm{s}right)}{2 cdot 174 times 10^{-18} mathrm{J}}
=frac{19.89 times 10^{-26}}{2.179 times 10^{-18}}=9.12 times 10^{-8} mathrm{m}
lambda=912 mathrm{A}
end{array}
]

# [F-7)=LIK . , = 1 and n = 2 Q.3 Calculate the longest wavelength which can remove the electron from I" Bohr's orbit. Given E = 13.6 eV.

Solution