**(A):** Valency and oxidation state of an element are always the same. <br> **(R):** Valency is the — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

**Assertion:** Valency is a fixed whole number (e.g., Carbon is 4). O.S. can be fractional, zero, or vary (e.g., in $CH_4$, O.S. is -4; in $CO_2$, it is +4). False. <br>**Reason:** These are the correct definitions for both terms. True.