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Who organized the periodic table in order of increasing atomic number?
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2. Atoms & Elements
Periodic Table: Classifications
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Which type of elements are primarily found on the left to middle of the periodic table?
A
Metals
B
Noble gases
C
Nonmetals
D
Halogens
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Recall the general layout of the periodic table, which is divided into metals, nonmetals, and metalloids based on their properties and positions.
Identify that the left side of the periodic table contains elements that are typically good conductors of heat and electricity, malleable, ductile, and have a tendency to lose electrons in reactions.
Recognize that these characteristics describe metals, which are primarily found on the left and middle sections of the periodic table.
Note that nonmetals and halogens are located more towards the right side of the periodic table, and noble gases are found in the far right column.
Conclude that the elements primarily found on the left to middle of the periodic table are metals.
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