Final answer:
Atoms transfer electrons in an ionic bond, resulting in sodium losing an electron and fluorine gaining one. This creates a positive charge on the sodium ion and a negative charge on the fluoride ion. The final overall charge of the compound is neutral, and the compound formed is called Sodium Fluoride (NaF).
Step-by-step explanation:
In an ionic bond, atoms transfer electrons to achieve a stable electron configuration. Sodium (Na) loses an electron, while fluorine (F) gains one when they form an ionic bond. This results in Na becoming a positive ion and F becoming a negative ion. Therefore, the correct answer for the change in the number of valence electrons is A: Na loses an electron, and F gains one.
The sodium ion (Na+) has a positive charge because it loses an electron, resulting in more protons than electrons. Hence, the correct answer for why the sodium ion has a positive charge is B: It loses electrons.
The fluoride ion (F-) has a negative charge because it gains an electron, creating an unequal number of protons and electrons. Thus, the correct answer for why fluoride has a negative charge is A: It gains electrons.
After the formation of the sodium fluoride compound, NaF, the charges of the sodium ion (+1) and the fluoride ion (-1) cancel each other out. This results in the overall charge of the compound being neutral. Hence, the correct answer for the final overall charge is A: Neutral.
The name and chemical formula for the compound formed between sodium and fluoride is Sodium Fluoride (NaF). Therefore, the correct answer for recording the name and chemical formula of the compound is A: Sodium Fluoride (NaF).