Q.

Which of the following statements is correct regarding periodic table?

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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, 18,18, 32 elements

d

All of the above

answer is B.

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Detailed Solution

(a) According to modern periodic law, the seventh period is incomplete.(b) Total number of groups are 1 to 18.c) Subsequent periods consist of 2, 8, 8, 18, 18 and 32 elements.
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Which of the following statements is correct regarding periodic table?