Relier Pairs Vocab #11-18Version en ligne PT vocab par Sarah Kniss 1 METAL: Elements that are metals have 3 valence electrons or fewer. 2 MENDELEEV: Mendeleev's contribution was critical to the field of chemistry. 3 FAMILY: Carbon and silicon are in the same family in the periodic table. 4 PERIOD: Hydrogen and helium are both located in the top period of the periodic table. 5 NONMETAL: Helium, oxygen, and fluorine are examples of nonmetals. 6 PERIODIC: The days of the week are periodic. 7 GROUP: Boron and aluminum are both in group 13 on the periodic table. 8 METALLOID: Silicon is an example of a metalloid because it has some properties of metals and others of nonmetals. repeating in a pattern scientist who arranged elements into a table and used it to predict unknown elements horizontal row on the periodic table element on the right side of the zigzag line on the periodic table element on the left side of the zigzag line on the periodic table another name for a group on the periodic table vertical column on the periodic table element bordering the zigzag line on the periodic table