Which one of the following is not the representative element?
Correct answer: A. Fe
- A. Fe
- B. K
- C. Ba
- D. N
Explanation
Representative elements (or main group elements) are those in the s-block and p-block of the periodic table. Iron (Fe) is a transition metal located in the d-block and is therefore not a representative element.
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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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