3. As we proceed from left to right in groups, what happens to the non-metallic nature? a) Remains constant b) Decreases c) Increases d) Irregular
Answer: c Explanation: The 18th group has no reactivity, but its non-metallic character is defined as a tendency to gain electrons, resulting in significant negative electron gain enthalpies. So the non-metallic nature increases from left to right in groups leaving noble gases.
