The first Ionization energy is maximum for:
Correct answer: B. Mg
- A. Na
- B. Mg
- C. Al
- D. K
Explanation
Moving from left to right in a period increases the ionization energy. However, the ionization energy of Mg is greater than the ionization energy of Al because the valence shell electron in Al is present in p-orbital while the valence shell electron in Mg is present in s-orbital. Hence the ionization energy of Mg is highest in the options above.
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