In graph of atomic volume versus atomic weight, the elements corresponding to peaks in the curve belong to
Correct answer: A. Group 1
- A. Group 1
- B. Group 18
- C. Group 4
- D. Group 14
Explanation
The elements corresponding to peaks in the graph of atomic volume versus atomic weight typically belong to Group 1, the alkali metals. These elements have a single electron in their outermost shell, leading to larger atomic sizes and, consequently, larger atomic volumes. In contrast, Group 18 elements are noble gases with filled valence shells, resulting in smaller atomic volumes at the end of each period. Group 4 and Group 14 elements have moderate atomic volumes and do not correspond to peaks in the graph.
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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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