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The periodic table, also known as the periodic table of the elements, arranges the chemical elements into rows ("periods") and columns ("groups"). It is an organizing ______ of chemistry and is widely used in physics and other sciences.
The periodic table, also known as the periodic table of the elements, arranges the chemical elements into rows ("periods") and columns ("groups"). It is an organizing ______ of chemistry and is widely used in physics and other sciences.
icon
The table is divided into four roughly rectangular areas called ______.
The table is divided into four roughly rectangular areas called ______.
blocks
Elements in the same group tend to show similar chemical ______.
Elements in the same group tend to show similar chemical ______.
characteristics
Metallic character increases going down a group and decreases from left to right across a ______.
Metallic character increases going down a group and decreases from left to right across a ______.
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The first periodic table to become generally accepted was that of the Russian chemist Dmitri Mendeleev in 1869; he formulated the periodic ______ as a dependence of chemical.
The first periodic table to become generally accepted was that of the Russian chemist Dmitri Mendeleev in 1869; he formulated the periodic ______ as a dependence of chemical.
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