Lanthanoid & Actinoids Contraction Past Year (1998 - 2005) MCQs The d and f Block Elements Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Lanthanoids are:

1.	14 elements in the seventh period (atomic no. = 90 to 103) that are filling 5f sublevel.
2.	14 elements in the sixth period (atomic no. 58 to 71) that are filling 4f sublevel
3.	14 elements in the seventh period (atomic no. = 58 to 71) that are filling 4f sublevel
4.	14 elements in the sixth period (atomic no. 90 to 103) that are filling 4f sublevel

Subtopic: Lanthanoid & Actinoids Contraction |

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