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Following are some statements about modern periodic table correct one is
i) It consists of s, p, d and f blocks
ii) The energy levels filling order in 6th period is 6s, 4f, 5d and 6p
iii) IIIA group contains maximum number of elements

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i and ii

only i

ii and iii

all

answer is A.

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Detailed Solution

Modern periodic table consists of s, p, d and f blocks .

And The energy levels filling order in 6th period is 6s,4f,5d and 6p.

But Statement 3 is incorrect because the IIIB group contains a maximum number of elements that are lanthanoids, transition elements, and Actinoids.

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