Periodic table

the modern periodic table is organized by increasing atomic

the level of reactivity in the group 1 elements does this down the column

protons + neutrons gives you the

Sodium combines with Chlorine to form this

central core of an atom

The group located along the zig zag line's main characteristic is this

group 1

group 18 is known as the

Which is NOT a Halogen

are the lanthanides and actinides placed where they are so that they will fit better and the table will look nice

material that allows heat or electricity to flow through

only chemical property of metals

This group is located along the zig zag line

+ charge

group 2

Which is a group of the major elements of life?

ability to be molded or bent into shape

horizontal row

who revised it

vertical column

no charge

two key alkaline earth metals

groups 3-12 are known as the

ability to be drawn out into wires

who created the first periodic table

arrangement of elements by their atomic number

- charge