1.

A. Sc to Zn1. 5d seriesB. Y to Cd2. ActinoidsC. La to Hg3. 3d seriesD. Ac to L4. 4d seriesABCD(a)3412(b)4231(c)1324(d)2143

Answer»

(a) 3, 4, 1, 2



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