We know that,
E=hc/wavelength
From the above formula we will first find the value of E.
So,E=(6.626×10^-34 j.s ×3×10^8 m/s)/(93.03×10^-9 m)
=2.13673 × 10^-18 j.
Now putting the value of E in rydberg equation as follow,:
E=2.18× 10^--18(1/1 - 1/n^2 )
Substituting the value of E to find n,
2.13673× 10^-18 j =2.18 ×10^-18 j (1/1 - 1/n^2 )
n^2= 1/.020183
n=7
Now we have find the value of E for 2165nm.
E=hc/wavelength
E=(6.626×10^-34 j.s ×3×10^8 m/s)/(2165×10^-9 m)
E=9.18152×10^-20 j
Now substituting the value of E in rydberg equation to find n,
9.18152×10^-20 j =2.18×10^-18 j(1/n^2 -1/7^2)
n =4
So when the value of n is 4 it released a photon of 2165nm.
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