GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Rows on the period table are called ____ while columns are called ____
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groups, families
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groups, periods
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periods, groups
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families, groups
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Explanation:
Detailed explanation-1: -The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups.
Detailed explanation-2: -The horizontal rows of the periodic table are called periods. Each period corresponds to the successive occupation of the orbitals in a valence shell of the atom, with the long periods corresponding to the occupation of the orbitals of a d subshell.
Detailed explanation-3: -The horizontal rows on the periodic table are called periods, where each period number indicates the number of orbitals for the elements in that row, according to Los Alamos National Laboratory (opens in new tab).
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