1.

The electronic configuration of four elements are given below. Which element does not belong tothe same block as others -(1)[Xe] 6s2 4f14 5d10 (2) [Ar] 4s2 3d(3) [Rn] 7s2 5f76d! (4) [Kr] 4d6 552​

Answer»

² 4f5d = HG[Ar]4s² 3D[Rn] 7s² 5f6d[KR]4D 5s² = Tc



Discussion

No Comment Found