The greater 1st ionization energy would be associated with which of the following configuration
Correct answer: D. 1s2 2s2 2p6
- A. 1s2 2s2 2p6 3s1
- B. 1s2 2s2 2p3
- C. 1s2 2s2 2p5
- D. 1s2 2s2 2p6
Explanation
The correct answer is D) 1s^2 2s^2 2p^6. Neon (Ne) has the greatest 1st ionization energy among the given configurations as it requires more energy to remove an electron from its stable 2p^6 subshell. Options A, B, and C have lower 1st ionization energies compared to neon because they belong to elements with different electron configurations and ionization energy trends.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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