The following reaction can be written as the sum of two reactions, one of which is related to ionization energy and the other is related to electron affinity: Li(g) +F(g) gives Li^ +(g) + F^-(g).
Answer 1
To which reaction corresponds the first ionization energy of lithium? Could you please help explain?
Lithium has a 1s2 2s1 electronic structure [ or 2.1 if using simple version]
the 1st IE just loses the first outer electron
Li(g) – e- –> Li+(g)
Which reaction corresponds to the electron affinity of fluorine? Fluorine has a 1s2 2s2 2p5 electronic structure. [ or 2.7] It is one electron less than Neon [2.8] with its very stable electronic arrangement. Therefore, it has electron affinity [liking to attract an electron]
1st EA gains 1 electron
F(g) + e- —> F-(g)
so efficiently an electron is transferred from Li to F
Source(s): RTC
answer 2
As Li^0(g) + F^0(g) —> (product) Li^+(g) + F^-(g) ions.
So Li(g) —> Li^+(g) + e^-
and F(g) + e^- —> F^-(g)
Source(s): Mastering Chemistry Tro