Question

Sodium chloride comprises 97%-99% of table salt. Given their location on the periodic table, identify the ionic charge for each element and predict the chemical formula of the compound formed. A) Sodium, Na, is an alkali metal and is in Group IA with an ionic charge of +1. While chlorine, Cl, is a halogen and is in Group VIIA with a charge of -1. These will form NaCl(s). B) Sodium, Na, is an alkaline earth metal and is in Group IA with an ionic charge of +2. While chlorine, Cl, is a halogen and is in Group VIIA with a charge of -1. These will form NaCl2(s). C) Sodium, Na, is an alkali earth metal and is in Group IA with an ionic charge of +2. While chlorine, Cl, is a noble gas and is in Group VIA with a charge of -2. These will form Na2Cl2(s). D) Sodium, Na, is an alkali earth metal and is in Group IA with an ionic charge of +1. While chlorine, Cl, is a diatomic gas and is in Group VIA with a charge of -2. These will form Na2Cl(s).

Answer 1

The answer is A) Sodium is an Alkali metal and is in group IA with an ionic charge of +1. While chlorine, Cl, is a halogen and is in group VIIA with a charge of -1. These will form NaCl(s).

Answer 2

Answer is: A) Sodium, Na, is an alkali metal and is in Group IA with an ionic charge of +1. While chlorine, Cl, is a halogen and is in Group VIIA with a charge of -1. These will form NaCl(s).

Table salt is sodium chloride mixed with small amount of potassium iodide (KI), sodium iodide (NaI) or sodium iodate (NaIO₃).

Atomic level - sodium chloride (NaCl) has crystal cubic structure (lattice-type arrangement) with ionic bonds. Sodium is cation with charge 1+ and chlorine is an anion with charge 1-.

Macroscopic level - table salt is colorless crystal, soluble in water with high melting and boiling temperature.

Ionic compounds are good good electricity and heat conductors, because ionic compounds have mobile ions (cations and anions) that are able to transfer electrical charge.