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The atoms are arranged by atomic number, and elements with similar properties are aligned vertically in groups or columns.
Which two patterns are used to arrange elements in the modern periodic table?
The atoms are arranged by atomic mass, and elements with similar properties are aligned vertically in groups or columns.
The atoms are arranged by atomic mass, and elements with similar properties are aligned horizontally in periods or rows.
The atoms are arranged by atomic number, and elements with similar properties are aligned horizontally in periods or rows.
The atoms are arranged by atomic number, and elements with similar properties are aligned vertically in groups or columns.
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