The elements in the periodic table are arranged in order of increasing atomic number, which is the number of protons in an atom's nucleus. This organization helps to predict chemical behavior and properties. The correct option is b) atomic number.
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The elements on the periodic table are arranged in order of increasing atomic number. This arrangement reflects the number of protons in each element's nucleus, making it a fundamental property of the elements. Understanding this organization is crucial for predicting chemical behavior and properties. ;