An element having low value of ionization energy and low value of electron affinity is likely to belong to__________________?
Correct answer: A. Group IA
- A. Group IA
- B. Group IB
- C. Group VIIA
- D. Group VIII
Explanation
Group IA elements have low ionization energy because they can readily lose their single valence electron, while their electron affinity is also relatively low because gaining an electron does not complete their most stable arrangement. The likely mistake is Group VIIA, whose atoms readily gain electrons but generally have high electron affinity rather than low electron affinity.
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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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