Answer:
See explanation
Explanation:
Now the element sodium has electronic configuration of [Ne]3s1
Florine has an electronic configuration of [He] 2p5
We know that in the formation of sodium flouride, sodium looses one electron to form Na^+ while F gains one electron to form F^-. So the electronic configuration of both Na^+ and F^- now become; 1s2 2s2 2p6