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