Periodic Table How to use it…. ATOMIC NUMBER: The number of protons in the nucleus. It is the...

Periodic Table

How to use it…

ATOMIC NUMBER:

The number of protons in the nucleus.It is the number of protons that identifies

the element. 12.011 -4 +2 +4

62-4

C6

AtomicAc number

ATOMIC MASS:

The sum of the protons and neutrons in the nucleus

12.011011 -4 +2 +4

62-4

C6

AtomicAc mass

NEUTRONS:

ROUNDED ATOMIC MASS – ATOMIC NUMBER

FOR EXAMPLE…CARBON ATOMIC MASS = 12.011…ROUNDED IS 12 ATOMIC NUMBER = 6

12 – 6 = 6 NEUTRONS

ROUNDED ATOMIC MASS

ATOMIC NUMBER

VALENCE ELECTRONS:

• Electrons that are involved in transfer or sharing

• Located in the outer level of the atom

• Not all electrons in an atom are involved in the sharing or transferring

• 2 ways to represent the number of valence electrons:

• The Bohr Model

• Lewis Structure

VALENCE ELECTRONS:

12.011 -4 +2 +4

62-4

2 - 4

CElectron configuration

PERIODIC TABLE OF ELEMENTS:

Organization of the all known elements based on their properties – such as atomic number.

12.011 -4 +2 +4

6

2-4

C

Selected oxidation state

Atomic Mass

Atomic Number

Electron Configuration