Question

Which reaction below represents the electron affinity of li? which reaction below represents the electron affinity of li? li(g) + e- → li-(g) li(g) + e- → li+(g) li+(g) → li(g) + e- li(g) → li+(g) + e- li+(g) + e- → li(g)?

Answer 1

Electron affinity is related to the formation of negative ions. Electron affinity can be defined as "the change in energy of a neutral atom when an electron is added to the atom forming a negative ion" To be more specific, energy (in kJ/mol) with regards to atoms (in a gaseous state/phase) Thus, the correct representation for the electron affinity of Li is [Li (g) + e- →  Li- (g)]