Post by Admin on Nov 21, 2016 11:40:13 GMT
The Periodic Table arranges the elements in order of increasing atomic number.
Atomic Number: The number of protons in the nucleus of an atom of an element.
Groups/Families - Vertical column.
All elements in a group are chemically similar.
All elements in a group have the same number of electrons in their outermost shell.
Group 1 - The Alkali Metals.
Group 2 - The Alkaline Earth Metals.
Group 7 - The Halogens.
Group 8 - The Noble Gases.
Period - Horizontal Row. (n=1, n=2, etc.)
All the elements in a period have the same number of electron shells.
Non-Metals are on the right.
Metals are on the left and center.
Atomic Number: The number of protons in the nucleus of an atom of an element.
Groups/Families - Vertical column.
All elements in a group are chemically similar.
All elements in a group have the same number of electrons in their outermost shell.
Group 1 - The Alkali Metals.
Group 2 - The Alkaline Earth Metals.
Group 7 - The Halogens.
Group 8 - The Noble Gases.
Period - Horizontal Row. (n=1, n=2, etc.)
All the elements in a period have the same number of electron shells.
Non-Metals are on the right.
Metals are on the left and center.