Using the Bohr model, determine the lowest possible energy, in joules, for the electron in the Li2+ ion.

Answer 1

Let's look at the electron in the Li2+ ion.

Li in ground state: 1s²2s¹

Li²⁺ ion: 1s¹

This is equivalent (isoelectronic) with hydrogen (H).

According to the Bohr model:

E = -13.61 eV

or

E = 2.179x10^-18 J (1/n_f² - 1/n_i²)

E = 2.179x10^-18 J