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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