Answer: Silver (Ag).
- A Silver (Ag)
- B Copper (Cu)
- C Gold (Au)
- D Aluminium (Al)
Correct answer: A. Silver (Ag)
Explanation: Silver has the highest electrical conductivity of all metals; copper is second and most commonly used (cheaper).
Aqueous solutions of transition metal ions show characteristic colours caused by electrons absorbing visible light to jump between split d-orbitals; the exact colour depends on the metal, its oxidation state, and surrounding ligands.
Concept context
Transition metals (d-block) and lanthanides/actinides (f-block). Known for coloured compounds, variable oxidation states, complex formation, and catalytic properties. Frequently tested in JEE and NEET.