Question

Which trends are observed as each of the elements within Group 15 on the Periodic Table is considered in order from top to bottom?
(1) Their metallic properties decrease and their atomic radii decrease.
(2) Their metallic properties decrease and their atomic radii increase.
(3) Their metallic properties increase and their atomic radii decrease.
(4) Their metallic properties increase and their atomic radii increase.

Answer 1

Answer;

-Their metallic properties increase and their atomic radii increase

Explanation;

-Group 15 is also called the nitrogen family. It consists of the elements nitrogen, phosphorus, arsenic, antimony, moscovium and bismuth. The atomic radius of these elements increases from Nitrogen to Bismuth.

-Moving down the group, the ionic radii, and atomic radii increases. This is because of the expansion of another main energy level in each progressive element.

-Moving down a group, metallic character increases. On the other hand, the ionization enthalpy of the elements decreases due to an increase in their nuclear size.

Answer 2

4) their metallic properties increase and their atomic radii increase.