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Multiple Choice
Which group of elements on the periodic table have the most similar chemical properties?
A
Elements in the same period (horizontal row)
B
Elements in the same group (vertical column)
C
Elements with similar atomic masses
D
Elements with consecutive atomic numbers
Verified step by step guidance
1
Understand that the periodic table is arranged in rows called periods (horizontal) and columns called groups (vertical).
Recall that elements in the same group have the same number of valence electrons, which largely determines their chemical properties.
Recognize that elements in the same period have increasing atomic numbers and different valence electron configurations, so their chemical properties vary more.
Note that atomic mass does not directly determine chemical properties, and elements with consecutive atomic numbers can belong to different groups with different properties.
Conclude that elements in the same group (vertical column) have the most similar chemical properties because they share the same valence electron configuration.