Download Summary of the Periodic Table of Elements: 1. Elements in the same

Summary of the Periodic Table of Elements:
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Elements in the same family have similar properties.
Elements towards the left are metals.
Elements towards the right are nonmetals.
Metalloids are found on either side of the zig-zag line.
Certain properties of elements vary in regular ways from left to right.
a. Electron configuration
b. Reactivity
c. Atomic size
d. Metallic properties
6. Valence electrons are involved in the chemical combining of elements
in the forming of molecules.
7. Elements to the left in the periodic table tend to lose electrons.
8. Elements to the right in the periodic table tend to gain electrons.
9. The amount of energy needed to remove an electron from an atom
shows periodic increase from left to right across the periodic table.
10. Metals tend to lose electrons while nonmetals tend to gain electrons.
11. Elements vary periodically in atomic size. From left to right the size
of the atom tends to decrease.
12. Metallic properties of the elements are also periodic. From left to
right across the periodic table, elements become less metallic in
nature.
13. Nonmetals increase in chemical activity as you move to the right and
up across the periodic table. Fluorine (F) in the most chemically active
nonmetal.
14. Metals increase in chemical activity as you move down and left across
the periodic table. Francium (Fr) in the most chemically active metal.