Multiple Choice
Which significant change did Glenn Seaborg make to Mendeleev's periodic table?
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2. Atoms & Elements
Periodic Table: Group Names
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Where on the periodic table are the most active metals located?
A
In the upper left corner
B
In the upper right corner
C
In the center of the table
D
In the lower left corner
Verified step by step guidance1
Understand that the activity of metals refers to how readily they lose electrons to form positive ions, which is related to their reactivity.
Recall that metals are located on the left side and center of the periodic table, while nonmetals are on the right side.
Recognize that the most active metals are those that lose electrons most easily, which generally means they have low ionization energies.
Note that ionization energy decreases as you move down a group (column) and decreases as you move from right to left across a period (row) on the periodic table.
Combine these trends to conclude that the most active metals are found in the lower left corner of the periodic table, where elements have the lowest ionization energies and highest reactivity.
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