Problem 41b

Given information

Here we are given the elements Arsenic (As) and Bismuth (Bi), we have to find out which one is more metallic.

Step-by-step explanation

The level of reactivity of a metal is defined as its metallic character. It decreases across a period in the periodic table from left to right and increases down the group in the periodic table.

Among  Arsenic (As) and Bismuth (Bi),Metallic character increases down the group and Bi is the lowest element of group 15 so it is most metallic. It has lowest ionization energy, electronegativity.

As the effective nuclear charge acting on the valence shell electrons increases across a period, the tendency to lose electrons will decrease. Hence, metallic character decreases across a period and increases down a group.