객관식
In the modern periodic table, how many vertical columns (groups) are there?
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4. Atoms and Elements
Periodic Table: Group Names
Multiple Choice
In the periodic table, what do the vertical columns represent?
A
Isotopes of a single element arranged by increasing mass number
B
A ranking of elements by electronegativity from lowest to highest
C
Groups (families) of elements with similar chemical properties
D
Periods (rows) that indicate the principal energy level
검증된 단계별 안내1
Understand that the periodic table is organized in two main directions: vertical columns and horizontal rows.
Recognize that vertical columns in the periodic table are called 'groups' or 'families'.
Know that elements within the same group share similar chemical properties because they have the same number of valence electrons.
Differentiate groups from periods, which are the horizontal rows representing elements with increasing principal energy levels.
Conclude that the vertical columns represent groups (families) of elements with similar chemical properties.
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