Which of the following sequences correctly represents the increasing order of metallic character for — Periodic Table and Periodicity Chemistry Question

💡 Solution & Explanation

Metallic character decreases across a period and increases down a group. Across period 3: $Na > Mg > Si > P$. Comparing group 2: $Mg > Be$. Since $Na$ is an alkali metal, it is the most metallic. Thus, the increasing order is $P (\text{non-metal}) < Si (\text{metalloid}) < Be < Mg < Na$.