Question

Wavelergan ( lambda=242 mathrm{nm}=242 times 10^{-9} mathrm{m} )
Energy of Moton ( =frac{h C}{lambda}=frac{6.6 times 10^{-34} mathrm{Js} times 3.0 times 10^{circ}}{242 times 10^{-9} mathrm{m}} )
( =0.0821 times 10^{-17} mathrm{Jatom}^{-1} )
This energy is sufficient to canse iomination of one atom of Na
" Tonisation encegy in ( k J ) for I mole
[
begin{array}{l}
=0.0821 times 10^{-17} times 6.02 times 10^{23}
=494 mathrm{kJ} mathrm{mol}^{-1}
end{array}
]

# Page No. Page No (Date : 1201 Quesy Electromagnetic Madiatione col wavelength 242 mm v is just sollicent D to ionise ! re so duen acom. Callblate the Tonization energy o sodium im KJ mot!

Solution