Regarding lanthanide contraction, some statements are given a) It arises because of the poor shielding effect of 5f-electrons b) The atomic radii and ionic radii steadily decrease from Ce to Lu c) The crystal structures and other properties are similar d) The seperation of lanthanides from one another is difficult from their salt solutions. The correct statements are

Regarding lanthanide contraction, some statements are given a) It aris

1.	Regarding lanthanide contraction, some statements are given a) It arises because of the poor shielding effect of 5f-electrons b) The atomic radii and ionic radii steadily decrease from Ce to Lu c) The crystal structures and other properties are similar d) The seperation of lanthanides from one another is difficult from their salt solutions. The correct statements are
Answer» a,B,C b,c,d a,c,d a,b,d Answer :B