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Highest ionization potential is shown by

Correct answer: D. Inert gases

  • A. Alkali metals
  • B. Halogens
  • C. Transition metals
  • D. Inert gases

Explanation

The correct answer is Inert gases. Inert gases, also known as noble gases, have a complete valence electron shell, making them very stable and less likely to lose an electron. This results in them having the highest ionization potential among the elements. On the other hand, alkali metals have low ionization energies because they have only one electron in their outer shell which they can lose easily. Halogens have high electronegativity but not the highest ionization energies because they prefer to gain electrons. Transition metals have variable ionization energies that are generally lower than those of noble gases.

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About Periodic Properties and Trends

Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.

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