Elements of group IA IIA are _________________?
Correct answer: B. Electropositive
- A. Electronegative
- B. Electropositive
- C. Neutral
- D. IA is electropositive while IIA is electronegative
Explanation
Group IA and IIA elements readily lose their outer electrons and therefore show electropositive character. Students may choose electronegative because all elements attract electrons to some extent, but these metals have low ionization energies and preferentially form positive ions.
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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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