The correct decreasing order of electropositive character among the following elements is:
Correct answer: D. Rb > Ca > Sc > Fe > Te > Br > F
- A. Fe > Sc > Rb >Br > Te > F > Ca
- B. Ca > Rb > Sc > Fe > Te > Br > F
- C. Rb > Ca > Sc > Fe > Br > Te > F
- D. Rb > Ca > Sc > Fe > Te > Br > F
Explanation
Electropositive character (metallic character) is highest for alkali metals (Rb) and decreases across the periodic table.The general trend is alkali metals > alkaline earth metals > transition metals > metalloids > non-metals. Within non-metals, it increases down a group.
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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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