Which region of the periodic table has the most elements. list them in order

periodic table`~

Explanation:

period:  a row of the periodic table.  Properties of the elements are periodic, meaning that they repeat after a specific interval.  Elements in the same period have their highest energy electrons in the same principal energy level.

group (family):  a column of the periodic table.  Elements in the same group have the same number of valence electrons, and therefore have similar chemical and physical properties.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.