객관식
Which element is most likely to have chemical properties similar to oxygen because it is in the same group on the periodic table?
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4. Atoms and Elements
Periodic Table: Group Names
Multiple Choice
In the periodic table, what are the horizontal rows called?
A
Periods
B
Blocks
C
Groups
D
Families
검증된 단계별 안내1
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'. Each period corresponds to the filling of a different electron shell.
Know that the vertical columns are called 'Groups' or 'Families', which contain elements with similar chemical properties.
Identify that 'Blocks' refer to sections of the periodic table based on electron subshells (s, p, d, f), not rows or columns.
Therefore, the correct term for the horizontal rows in the periodic table is 'Periods'.
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