Multiple Choice
Which group on the periodic table is generally the least reactive under standard conditions?
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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, what are the horizontal rows called?
A
Families
B
Periods
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 vertical columns in the periodic table are called 'Groups' or 'Families', which contain elements with similar chemical properties.
Identify that the horizontal rows in the periodic table are called 'Periods'. Each period represents elements with increasing atomic number from left to right.
Recall that 'Blocks' refer to sections of the periodic table based on electron configurations (s, p, d, f blocks), not rows or columns.
Therefore, the correct term for the horizontal rows in the periodic table is 'Periods'.
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