groups go vertically and periods are the horizontal rows
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The table of elements is called the Periodic Table of Elements. It organizes all known chemical elements based on their atomic number and chemical properties.
Rows in the periodic table are called periods. There are seven periods in the periodic table which represent the energy levels of the elements. Each period signifies the number of electron shells an element has.
The rows in the periodic table are called periods. There are 7 periods in periodic table.
periodsThere are seven periods, or rows, on the periodic table.
There are six metalloids on the periodic table: boron, silicon, germanium, arsenic, antimony, and tellurium.