Multiple Choice
Which group on the periodic table contains elements that are the least reactive?
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2. Atoms & Elements
Periodic Table: Group Names
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Which group of elements on the periodic table is characterized by having similar chemical properties?
A
Elements with consecutive atomic numbers
B
Elements in the same period (horizontal row)
C
Elements in the same group (vertical column)
D
Elements with the same number of neutrons
Verified step by step guidance1
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 with consecutive atomic numbers are neighbors but do not necessarily share similar chemical properties because their electron configurations differ.
Note that elements in the same period have the same number of electron shells but different valence electrons, so their chemical properties vary across a period.
Understand that elements with the same number of neutrons are isotones, but this does not determine chemical behavior; chemical properties depend mainly on valence electrons.
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