Multiple Choice
How are the elements on the periodic table primarily arranged?
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2. Atoms & Elements
Periodic Table: Classifications
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the term used to refer to the rows in the periodic table?
A
Blocks
B
Periods
C
Families
D
Groups
Verified step by step guidance1
Understand that the periodic table is organized in two main directions: horizontally and vertically.
The horizontal rows in the periodic table are called \textbf{Periods}. Each period corresponds to the filling of a principal energy level of electrons.
The vertical columns in the periodic table are called \textbf{Groups} or \textbf{Families}, which contain elements with similar chemical properties.
Blocks refer to sections of the periodic table based on electron subshells (s, p, d, f blocks), not rows or columns.
Therefore, the term used to refer to the rows in the periodic table is \textbf{Periods}.
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