Dmitri Mendeleev arranged the elements in the periodic table according to

Elements in the periodic table are periodic functions of their

Groups are

Periods are

All elements in the same column or group (except group 3-12) have the same number of

Elements with the same number of valence electrons tend to have

All elements in the same period have the

Elements tend to want to be

Why do elements tend to want an octet or full valence shell? (except for period 1 elements)

Group 1 tends to be called

Noble gases are group ___ and have a ____ octet

Alkaline Earth Metals are group

transition metals are group

Halogens are also called

Henry Moseley organized the periodic table based on