Which of the following is a bridge element?
Correct answer: A. Be
- A. Be
- B. CI
- C. K
- D. P.
Explanation
The concept of bridge elements refers to elements that show a diagonal relationship between the second and third periods of the periodic table. Beryllium (Be), a Group 2 element, is considered a bridge element because it exhibits properties that are similar to aluminum (Al) in Group 13. This diagonal similarity is due to comparable charge densities and atomic sizes. The other options, Chlorine (Cl), Potassium (K), and Phosphorus (P), do not show these kinds of cross-group similarities and therefore are not bridge elements.
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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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