1. EXPLORING THE PERIODIC TABLE

2. SC.912.P.8.5 RELATE PROPERTIES OF ATOMS TO THEIR ARRANGMENTS OF ELECTRONS
KEY TERMS:
IONS
METAL
NON-METAL
SEMI-CONDUCTORS or METALLOIDS

3. THE STRUCTURE OF THE PERIODIC TABLE
THE PERIODIC TABLE IS ARRANGED BY
ATOMIC NUMBER

4. ATOMIC NUMBER
THE ATOMIC NUMBER OF AN ELEMENT IS THE NUMBER OF PROTONS IN THE NUCLEUS OF THAT ATOM

5. PROTONS ARE EQUAL TO THE NUMBER OF ELECTRONS
WHEN AN ATOM HAS NO CHARGE- IT IS
CONSIDERED TO BE NEUTRAL
WHEN THE NUMBER OF PROTONS AND ELECTRONS ARE EQUAL- THE ATOM HAS NO CHARGE

6. CHEMICAL BEHAVIOR OF AN ATOM
THE CHEMICAL BEHAVIOR OF AN ATOM, OR ELEMENT IS DETERMINED BY THE NUMBER OF VALENCE ELECTRONS
VALENCE ELECTRONS ARE THOSE ELECTRONS FOUND IN THE OUTER RING OR SHELL OF THE ATOM

7. COPY FIGURE 1 P 151 INTO YOUR NOTES
PAGE FIGURE 1
COPY FIGURE 1 P 151 INTO YOUR NOTES
PAY ATTENTION TO THE RINGS FOR EACH ATOM
1- WHAT DO EACH OF THOSE ATOMS HAVE IN COMMON
2- HOW ARE EACH OF THOSE ATOMS DIFFERENT

8. PAGE 152 ELEMENT ENERGY LEVEL ORBITAL NUMBER OF ELECTRONS
LITHIUM S S
HOW MANY ELECTRONS ARE FOUND IN THE VALENCE LEVEL

9. DO THE SAME TABLE FOR SODIUM 11Na
ELEMENT’S NAME
ENERGY LEVEL
ORBITAL
# OF ELECTRONS 1 S 2 3 P 6

10. SUMMARIZE THE TABLE FROM THE PREVIOUS SLIDE
1- WHAT IS THE NAME OF THE ELEMENT?
2- WHAT IS THE ATOMIC NUMBER OF THE ELEMENT?
3- WHAT IS THE NUMBER OF PROTONS IN THE NUCLEUS OF THE ELEMENT?
4- WHAT IS THE TOTAL NUMBER OF ELECTRONS IN THE ENERGY LEVELS FOR THAT ELEMENT?
5- HOW MANY ELECTRONS ARE PRESENT IN THE FIRST ENERGY LEVEL? THE SECOND ENERGY LEVEL? THE THIRD ENERGY LEVEL?

11. COMPARE LITHIUM AND SODIUM ELECTRON CONFIGURATIONS
TOTAL ELECTRONS:
TOTAL PROTONS:
VALENCE SHELL NUMBER:
NUMBER OF ELECTRONS IN
THE VALENCE SHELL:
TOTAL ELECTRONS:
TOTAL PROTONS:
VALENCE SHELL NUMBER:
NUMBER OF ELECTRONS IN
THE VALENCE SHELL: