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Distinguish between..............
Term | Definition |
---|---|
Periodic tables | a chart that organize information about all of the known elements according to their properties. |
Period | in Chemistry a horizontal row of elements in the periodic table. |
Group | a vertical column of element in the periodic table;element in a group share chemical properties. |
Valence electrons | an electron that is found in the outermost shell of the atom and that determines the atoms chemical properties. |
Reactivity | describes how likely an element is form bonus with other elements. |
Metalloid | element that have properties of both metals and nonmetals |
lnsert | unable to react chemically under normal circumstance. |