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>F>Br
- C. Rb>Ca>Sc>Fe>Br>Te>F
- D. Rb>Ca>Sc>Fe>Te>Br>F
Explanation
Alkali and alkaline earth metals are most electropositive. Alkali metals are more electropositive than alkaline earth metals. In d-block elements, the elements near the alkaline earth metals are more electropositive than rest of the members. Metalloids are less electropositive than metals. Halogens(nonmetals) are least electropositive. In halogen group, electropositive character increases down the 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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