Textbook Question
Identify the group or period number described by each of the following:a. contains C, N, and O
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4. Atoms and Elements
Periodic Table: Group Names
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the periodic table, the horizontal rows are called what?
A
Periods
B
Families
C
Groups
D
Blocks
Verified step by step guidance1
Understand that the periodic table is organized in two main directions: horizontally and vertically.
Recognize that the horizontal rows in the periodic table are called 'Periods'.
Know that each period corresponds to the filling of a different electron shell or energy level in atoms.
Differentiate between 'Periods' (horizontal rows) and 'Groups' or 'Families' (vertical columns) which share similar chemical properties.
Recall that 'Blocks' refer to sections of the periodic table based on electron subshells (s, p, d, f), not rows or columns.
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