What is the frequency of the second line of the Paschen series in the spectrum of He^+ ion? — Atomic Structure Chemistry Question

💡 Solution & Explanation

Second line of Paschen series (n_1=3, n_2=5) for He^+ (Z=2): ν = R*C*Z^2*(1/3^2 - 1/5^2) = 4*R*C*(16/225) = 64RC/225.