Naming and Properties of PCl5

The video tutorial explains how to name the chemical compound PCl5. It begins by identifying the elements involved, phosphorus and chlorine, both non-metals, indicating a molecular compound. The tutorial then details the naming process, emphasizing the use of prefixes for molecular compounds. Phosphorus is named as it appears on the periodic table, while chlorine becomes chloride. The prefix 'penta' is used for the five chlorine atoms, resulting in the name phosphorus pentachloride. The video also covers how to write the chemical formula from the name, highlighting the importance of understanding prefixes.

What type of compound is PCl5?

• Ionic compound

• Molecular compound

• Metallic compound

• Covalent network solid

How many nonmetals are involved in the compound PCl5?

• Four

• Three

• Two

• One

Which element in PCl5 is named first according to the periodic table?

• Chlorine

• Phosphorus

• Oxygen

• Sulfur

What is the correct prefix for five chlorine atoms in PCl5?

• Hexa

• Deca

• Tetra

• Penta

What is the complete name for PCl5?

• Phosphorus tetrachloride

• Phosphorus chloride

• Phosphorus pentachloride

• Phosphorus hexachloride

What does the prefix 'penta' indicate in the name phosphorus pentachloride?

• Six chlorine atoms

• Five chlorine atoms

• Four chlorine atoms

• Three chlorine atoms

If given the name 'phosphorus pentachloride', what is the chemical formula?

• PCl6

• PCl5

• PCl4

• PCl3