Question

Which of the following statements is correct regarding periodic table?

• A. According to modern periodic law, the sixth period is incomplete
• B. Total number of groups are $18$
• C. The subsequent periods consist of $2,8,8,16,32$ elements
• D. All of the above

Answer 1

Answer: (B)

Statement (b) is correct, while the other statements are incorrect.
Corrected form are as follows:
(a) According to modern periodic law, the seventh period is incomplete.
(c) Subsequent periods consist of $2,8,8,18,18$ and $32$ elements.