Questions: Question 8 (10 points) Check all the substances below that are ionic compounds. PCl3 CaCl2 HCl Na3P TiO2 Srl2

Transcript text: Question 8 (10 points) Check all the substances below that are ionic compounds. $\mathrm{PCl}_{3}$ $\mathrm{CaCl}_{2}$ HCl $\mathrm{Na}_{3} \mathrm{P}$ $\mathrm{TiO}_{2}$ $\mathrm{Srl}_{2}$

Solution

Solution Steps

Step 1: Identify Ionic Compounds

Ionic compounds are formed from the electrostatic attraction between cations (positively charged ions) and anions (negatively charged ions). Typically, these compounds consist of a metal and a non-metal.

Step 2: Analyze Each Substance

$\mathrm{PCl}_{3}$: Phosphorus trichloride is a covalent compound because it is formed between non-metals (phosphorus and chlorine).
$\mathrm{CaCl}_{2}$: Calcium chloride is an ionic compound because it is formed between a metal (calcium) and a non-metal (chlorine).
HCl: Hydrogen chloride is a covalent compound in its gaseous form, but it forms ions in aqueous solution. However, it is not typically classified as an ionic compound.
$\mathrm{Na}_{3} \mathrm{P}$: Sodium phosphide is an ionic compound because it is formed between a metal (sodium) and a non-metal (phosphorus).
$\mathrm{TiO}_{2}$: Titanium dioxide is a covalent compound because it is formed between a metal (titanium) and a non-metal (oxygen) with a significant covalent character.
$\mathrm{Srl}_{2}$: Strontium iodide is an ionic compound because it is formed between a metal (strontium) and a non-metal (iodine).