Question & Answer: A gas of doubly ionized lithium atoms (Li2+) has its two longest wavelength absorption…..

A gas of doubly ionized lithium atoms (Li²⁺) has its two longest wavelength absorption lines at λ₁ = 13.37 nm and λ₂ = 8.9 nm. If the energy levels are given by

En = −R (1/n² ), n = 1, 2, 3, . . .

What is the value of the constant R? State your answer in electronvolts (eV).