Horizontal Rows of the Periodic Table Are Called?

Answer

The horizontal rows on the periodic table are referred to as Periods. The vertical rows are referred to as Groups.
Q&A Related to "Horizontal Rows of the Periodic Table Are Called..."
Columns (the lines like this : l. are called. groups. and. Rows (the lines like this : are called. periods.
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A period is a horizontal row in the periodic table of
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They are called Periods.
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Rows in the periodic table are called periods. As one moves from left to right in a given period, the chemical properties of the elements slowly change.
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The Periodic Table of Elements
Dmitri Mendeleev generally is credited with the creation of the first periodic table, which charts the chemical elements by atomic number and valence shell electron configuration.
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