Podcast Beta
Questions and Answers
Which of the following period 3 element chlorides has an oxidation number of +3 and a covalent structure?
Which chloride forms a dimeric gas (Al2Cl6) upon heating?
Which of the following compounds has a molecular covalent structure?
What description matches PCl5 in the solid state?
Signup and view all the answers
Which of these period 3 chlorides consists of giant structures?
Signup and view all the answers
Which compound is found in liquid state and has a simple molecular structure?
Signup and view all the answers
Which of the following chlorides has an oxidation number of +5?
Signup and view all the answers
Which chloride has a molecular covalent structure but turns into a simple molecular structure when melted?
Signup and view all the answers
Which chloride is classified as white ionic compound and forms a lattice structure?
Signup and view all the answers
Which of these compounds is held together by strong electrostatic forces?
Signup and view all the answers
Study Notes
Chlorides of the Period 3 Elements
- The chlorides of period 3 elements have formulae that depend on the oxidation number of the element.
- The oxidation number of the element in its chloride is equal to the number of chlorine atoms attached to the element.
Formulae of Chlorides
- NaCl has an oxidation number of +1.
- MgCl2 has an oxidation number of +2.
- AlCl3 has an oxidation number of +3.
- SiCl4 has an oxidation number of +4.
- PCl3 has an oxidation number of +3, and PCl5 has an oxidation number of +5.
- SCl2 has an oxidation number of +2.
Nature and Structure of Chlorides
Ionic Chlorides
- NaCl is a white ionic compound with a giant structure.
- MgCl2 is a white ionic compound with a giant structure, composed of oppositely charged ions held together by strong electrostatic forces.
Covalent Chlorides
- AlCl3 is a white covalent compound with a layered lattice structure at room temperature.
- AlCl3 turns into a dimeric gas (Al2Cl6) when heated to about 180°C, and then has a simple molecular structure.
- SiCl4 is a colourless covalent compound in a liquid state with a simple molecular structure.
- PCl3 is a colourless covalent compound in a liquid state with a simple molecular structure.
- SCl2 is a colourless covalent compound in a liquid state with a simple molecular structure.
Special Case of PCl5
- PCl5 is a white ionic compound in the solid state with an ionic lattice of [PC16] [PC14]*.
- PCl5 has a simple molecular structure in the gaseous state.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Learn about the binary compounds of chlorine with period 3 elements, including their formulae and oxidation numbers.
