Which of the following groups in modern periodic table have largest number of elements:
Correct answer: C. III B.
- A. IA.
- B. III A.
- C. III B.
- D. Zero Group.
Explanation
Group III B includes lanthanides and actinides and the total number of elements in this group = 32. Hence correct option is C. Group lA includes 7 elements , lllA includes 6 elements and zero group (Noble family) contains seven elements. Thus options A , B and D are not correct.
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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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