What is the name of the horizontal rows in the periodic table?

A. groups

B. periods

C. metalloids

D. noble gasses

Horizontal rows on the periodic table - periods

Vertical rows on the periodic table-groups

Noble gases are all the elements found in group 18

Metalloids are elements that have some properties of a metal and a non metal

The horizontal rows on the periodic table are called periods. Those do not share the same properties.