Periodic table has been divided into four blocks, which block contains highest elements?
Correct answer: C. d
- A. s
- B. p
- C. d
- D. f
Explanation
The periodic table is divided into four blocks: s, p, d, and f. The d-block, or transition metals block, has the most elements, covering groups 3 to 12. This block is characterized by the filling of d orbitals and includes various metals such as iron and copper. The s-block has only two groups (1 and 2) with fewer elements. The p-block spans groups 13 to 18 but doesn't surpass the d-block in number. The f-block contains the lanthanides and actinides, which are fewer in number and placed separately at the bottom.
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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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