Noble gases have highest ionization enthalpies in their respective periods. — Periodic Table and Periodicity Chemistry Question

💡 Solution & Explanation

Step 1: Recall the statement of the Modern Periodic Law as established by Henry Moseley. Step 2: The Modern Periodic Law states that the physical and chemical properties of elements are periodic functions of their atomic numbers. Step 3: Periodicity (the recurrence of similar properties) is thus observed when the elements are arranged in order of increasing atomic number.