According to the Rydberg Equation, the Longest Wavelength (In Nm)

Multiple Choice

According to the Rydberg equation, the longest wavelength (in nm) in the series of H-atom lines with n₁ = 3 is

A) 1875 nm.
B) 1458 nm.
C) 820. nm.
D) 656 nm.
E) 365 nm.