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In the periodic table, what are the vertical columns called?
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4. Atoms and Elements
Periodic Table: Group Names
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In the modern periodic table, how many vertical columns (groups) are there?
A
8
B
18
C
16
D
32
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Understand that the modern periodic table is organized into vertical columns called groups, which classify elements with similar chemical properties.
Recall that the groups are numbered from 1 to 18, representing the columns from left to right across the table.
Recognize that these 18 groups include both the main-group elements and the transition metals.
Note that the groups are important because elements in the same group have the same number of valence electrons, which influences their chemical behavior.
Therefore, the total number of vertical columns (groups) in the modern periodic table is 18.
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