On the periodic table, what are the vertical columns and horizontal rows respectively called?
ABoth rows and columns are simply called groups
BBoth rows and columns are simply called periods
CRows are called groups, and columns are called periods
DColumns are called groups, and rows are called periods
Explanation
On the periodic table, the vertical columns are called groups, and elements within the same group typically share similar chemical properties due to having the same number of electrons in their outermost shell. The horizontal rows, by contrast, are called periods, and elements across a given period share the same number of electron shells, though their chemical properties can vary considerably from one end of the row to the other. This organized structure helps chemists predict and understand the likely behavior of elements based on their position within the table. Explore more Everyday Science MCQs on mcqstutor to keep practicing.
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