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

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.