This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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You're on a roll — Here are the answers to your questions: 5. Which particles conduct electricity in: a) Molten lead (II) bromide ✅ Correct. The particles are ions (Pb^2+ and Br^-). b) Lead metal ✅ Correct. The particles are delocalized electrons. 6. The information in the table below relates to the physical properties of the chlorides of certain elements. a) Explain why melting points of NaCl and MgCl_2 are higher than those of SiCl_4, PCl_3 and SCl_2 chlorides in the table above. NaCl and MgCl_2 are ionic compounds with strong electrostatic forces of attraction between oppositely charged ions in a giant ionic lattice structure. A large amount of energy is required to overcome these strong forces, resulting in high melting points. SiCl_4, PCl_3, and SCl_2 are covalent compounds that exist as simple discrete molecules. The forces between these molecules are weak intermolecular forces (van der Waals forces). Only a small amount of energy is required to overcome these weak forces, leading to low melting points. What's next?