Why is the first ionization energy of Beryllium higher than Boron?
Correct answer: C. Beryllium has a stable electronic configuration
- A. Boron has a higher electronic configuration than Beryllium
- B. Atomic radius of Beryllium is smaller than Boron
- C. Beryllium has a stable electronic configuration
- D. Boron has a smaller atomic number than Beryllium
Explanation
Beryllium has a stable electronic configuration - Correct. Beryllium has a fully filled 2s orbital, which is more stable and requires more energy to remove an electron compared to Boron, where the electron is in a higher-energy 2p orbital.
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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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