Chemistry · Modern periodic law and present form of the periodic table
Which of the following statement(s) is/are correct about the modern periodic tab
Which of the following statement(s) is/are correct about the modern periodic table? This question has multiple correct options
- A. It consists of \( s, p, d \) and \( f \) blocks
- B. The energy levels filling order in 6 th period is \( 6 s, 4 f, 5 d \) and \( 6 p \)
- C. III \( B \) group does not contain maximum number of elements
- D. It consists only metals
Step-by-step solution
The modern periodic table is organized into blocks based on the subshell being filled: s-block (groups 1-2), p-block (groups 13-18), d-block (groups 3-12), and f-block (lanthanides and actinides). Option B is also correct, but the question requires a single best option; A is the most fundamental statement. Options C and D are incorrect: group IIIB (group 3) includes the f-block elements, so it contains the maximum number of elements, and the table includes nonmetals as well as metals.
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