the formation of lithium fluoride (seen here)...
the formation of lithium fluoride (seen here) is due to\na a stronger pull by the lithium atom on its valence electron.\nb increased stability in the completion of fluorines outer shell.\nc the addition of an outer (higher) energy level in the fluoride ion.\nd decreased attraction between the lithium and fluoride ions.
Answer
# Brief Explanations:
Lithium has one valence - electron and fluorine has seven valence - electrons. Fluorine has a high electronegativity and has a strong tendency to gain an electron to complete its outer shell (octet rule). In the formation of lithium fluoride, lithium donates its valence electron to fluorine. This transfer of electron occurs because fluorine becomes more stable when its outer shell is complete.
# Answer:
B. increased stability in the completion of fluorine's outer shell.