Question

how is electron movement related to the bonding in sodium chloride?
a the atomic orbitals overlap and share electrons causing an ionic bond to form.
b electrostatic sharing of electrons between atoms allows covalent bond formation.
c electrons exchange creating ions to form an ionic bond by electrostatic attraction.
d orbital overlap occurs between the atoms to exchange electrons to form the covalent bond.

Explanation:

Sodium chloride ($NaCl$) is an ionic compound. Sodium ($Na$) donates an electron to chlorine ($Cl$), forming $Na^+$ and $Cl^-$ ions. These ions are held together by electrostatic attraction, which is the basis of an ionic bond.

• Option A is incorrect because orbital overlap and electron - sharing are characteristics of covalent bonds, not ionic bonds.
• Option B is wrong as electrostatic sharing of electrons is not a correct description for ionic bond formation (ionic bonds involve electron transfer, not sharing).
• Option D is incorrect since orbital overlap for electron exchange is related to covalent bond formation, not the ionic bond in sodium chloride.

Answer:

C. Electrons exchange creating ions to form an ionic bond by electrostatic attraction.