Question

In the periodic table metallic character of elements shows one of the following trend:

• A. decreases down the group and increases across the period
• B. increases down the group and decreases across the period
• C. increases across the period and also down the group
• D. decreases across the period and also down the group
• E. decreases down the group and remains constant across the period

Answer 1

Answer: (B)

Metallic character $ \propto $ atomic size $ \propto \frac{1}{nuclear\text{ }charge} $ (for a period only) Metallic character decreases across a period from left to right because atomic size decreases. In a group from top to bottom, metallic nature increases due to increase in atomic size.