Which one of the elements is most metallic P Bi Sb As

The most metallic element among P (Phosphorus), Bi (Bismuth), Sb (Antimony), and As (Arsenic) is Bi (Bismuth).

Here's why:

In the periodic table, metallic character increases as you move from right to left and from top to bottom. This is due to the increase in atomic size, which leads to a decrease in ionization energy and an increase in metallic character.

P (Phosphorus) is a non-metal, As (Arsenic) and Sb (Antimony) are metalloids, and Bi (Bismuth) is a metal.

Therefore, Bi (Bismuth) is the most metallic among the given elements.