How is periodic table divided?

Answer 1

1 is least massive leading to the manmade elements in the 100's which are most massive, and also by gasses, non-metals, metaloids and metals'

Answer 2

in columns which each element in the column has the same number of valence electrons in the outer shell

Answer 3

The Periodic Table is categorized by alkaline earth metals, akali earth metals, metals, nonmetals, and noble gasses. It is also in order by the Atomic Mass of the elements.

Answer 4

Periodic table comprises of periods and groups. The elements are arranged in the order of increasing atomic number.

Answer 5

The bold staircase resembles semi-metals. They divide metals and non-metals.

Answer 6

metals nonmetals and metalloids