Guide Questions:
1. Using the Periodic table, in which group/s the following belong?
a. Metallic elements?
b. Non-metallic elements?
c. Semi-metallic/Metalloids elements?
d. Noble gases?
2. Which number will give you an idea on the number of valence
electrons?
3. What have you notice in the number of valence electrons of metals, non-metals and
noble gases?
4. Using the Figure 1 above, draw a green arrow indicate the direction of ionization
energy and a violet arrow to indicate the electronegativity of the elements in he
periodic table.

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