Answer:
Groups are numbered 1–18 from left to right. The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.
HOPE IT'S HELP
FOLLØW ME PLEASE THANKS IN ADVANCE
Heart my answer if it's helpful
BRAINLIEST MY ANSWER IF you want
