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On the periodic table, what is a vertical column of elements called?
AA period
BA block
CA shell
DA group
Answer & Solution
Correct answer: D. A group
1. Elements were arranged so that similar properties fall into the same vertical column.
2. A group is a column on the periodic table containing elements with similar properties.
3. A period is the horizontal row, so the two words must not be swapped.
_Source: Siyavula Physical Sciences Grade 10 (Everything Science, CC BY 4.0), Chapter 5: The periodic table_
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