Metals are good conductors of heat and….A….Here, ‘A’ refers to — Periodic Table and Periodicity Chemistry Question

💡 Solution & Explanation

# Solution The question is incomplete as written, but based on the structure "Metals are good conductors of heat and….A….", the missing property is **electricity**. ## Why B (Electricity) is correct: **Metals have two primary conduction properties:** 1. **Heat conduction** — Metals conduct thermal energy efficiently due to free electrons and phonons that transfer kinetic energy through the lattice. 2. **Electrical conduction** — Metals conduct electric current because they contain **delocalized valence electrons** (electron sea) that move freely through the structure when a potential difference is applied. Both properties arise from the same fundamental feature: the presence of mobile electrons in the metallic lattice. ## Why other options would be wrong: - **Light** — Metals reflect light but don't "conduct" it in the same sense - **Sound** — While metals can transmit sound, this isn't a characteristic property emphasized alongside heat conduction - **Magnetism** — Only certain metals (ferromagnetic ones) conduct magnetism; most metals don't $$\boxed{\text{Answer: B (Electricity)}}$$ The complete statement is: **"Metals are good conductors of heat and electricity."**