Chemistry: Periodic Table and Trends

The (main) organizer of the periodic table

Dmitri Mendeleev

The atomic number of an element can be determined by the amount of ___

Protons (and electrons if uncharged)

The amount of neutrons of an element can be determined by ___

Subtracting the atomic mass from the atomic number

The broad classes of the periodic table

Representative (main group elements), transition metals, lanthanides and actinides (rare earth elements

The metallic arrangement of the periodic table

Metals and nonmetals

The rows of the periodic table

Periods

The columns of the periodic table

Groups/families

Notable families of the periodic table

Alkali metals, alkaline earth metals, transition metals, post-transition metals, metalloids, halogens, noble metals, noble gases

The blocks of the periodic table

s, p, d, f

Elements that tend to give up e^- and form cations

Metals

Elements that will give up e^- or accept e^-

Metalloids

Elements that tend to accept e^- and form anions

Nonmetals