While analyzing an ancient data archive left by an automated deep-space survey vessel, an astrochemist discovers a universal elemental catalog structured around repeating cycles of chemical reactivity. According to the modern periodic law, which fundamental property dictates this recurring pattern of physical and chemical behavior across the sequence of elements?

A) The total number of neutrons contained within the nucleus

B) The relative atomic mass calculated from natural isotopic abundance

C) The atomic number, representing the net positive nuclear charge

D) The total number of completely filled inner electron energy levels

Periodic law Original Scenario-Based Practice

Chemistry · The Periodic Table · Chemistry · Organization of the Periodic Table

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The Periodic Table · Chemistry

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