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 without seeing the options, but based on the stem "Metals are good conductors of heat and….A….", the most fundamental property that completes this statement is **electricity**. ## Why B is correct (assuming B = electricity): **Metals conduct both heat and electricity** due to the same underlying mechanism: 1. **Free electrons**: Metals have loosely bound valence electrons that form a "sea of electrons" in the crystal lattice 2. **Heat conduction**: These free electrons transfer kinetic energy from hot regions to cold regions through collision and movement 3. **Electrical conduction**: The same free electrons move directionally under an applied electric field, carrying charge 4. **Fundamental property**: Electrical conductivity is the complement property universally paired with thermal conductivity when describing metals This dual conductivity is a defining characteristic of metallic bonding and distinguishes metals from insulators (poor conductors of both) and semiconductors (moderate in both). $$\text{Metals} \rightarrow \text{Good thermal conductors} \text{ AND } \text{Good electrical conductors}$$