Answer :
Final answer:
In group 15 of the periodic table, elements show a progression from nonmetals to metalloids, and then to metals as the atomic number increases.
Explanation:
As the elements in group 15 of the periodic table are considered in order of increasing atomic number, the sequence in properties that occurs is nonmetals - metalloids - metals. Initially, the elements in group 15 start with nonmetals like nitrogen and phosphorus. As the atomic number increases, elements such as arsenic and antimony show properties characteristic of metalloids. Lastly, bismuth, with the highest atomic number in the group, is a metal. This trend reflects the general pattern observed in the periodic table where there is a progression from nonmetallic to metallic characteristics down a group.
