H

Hydrogen  

non-metal  

gas

He

Helium

 non-metal 

gas

N

Nitrogen

non-metal 

gas

O

Oxygen

non-metal

gas

P

Phosphorus

non-metal

solid

S

Sulfur

non-metal

 solid

C

Carbon

non-metal 

solid

Cl

Chlorine

non-metal

gas

Na

Sodium

metal

solid

Mg

Magnesium

metal

solid

Mn

Manganese

metal

solid

K

Potasium

metal 

solid

Ag

Silver

metal

solid

Au

Gold

metal

solid

Fe

Iron

 metal

solid

Br

Bromine 

Non- Metal 

Liquid

Al

Aluminum

metal

solid

Hg

Mercury

metal

liquid

Ca

Calcium

metal

solid

Period

The horizontal row of elements whose properties change gradually and predictably.

One period for each electron shell, K - Q.

Ni

Nickel

metal

solid

Si

Silicon

metalloid

solid

B

Boron

metalloid

solid

Group

A family of elements in the periodic table that have similar physical or chemical properties.

Horizonal column.

Li

Lithium

Solid

Metal

Be

Berylium

Solid

Metal

F

Fluorine

Gas

Non-Metal

Ne

Neon

Gas

Non-Metal

I

Iodine

Solid

Non-Metal

Pb

Lead

Solid

Metal

Cu

Copper

Solid

Metal

Zn

Zinc

Solid

Metal

Atomic Number

The number of PROTONS in an atom's nucleus.