Lanthanum is grouped with $f$ block elements because

Lanthanum is grouped with $f$ block elements because
  1. It has partially filled forbitals
  2. It is just before Ce in the periodic table
  3. It has both partially filled $f$ and d-orbitals
  4. The properties of Lanthanum are very similar to the elements of $4 f$ block

Solution

Tanthanum closely resembles the lanthanoids, it is usually included in any discussion of the lanthanoids for which the general symbol Ln is often used. *

Asked in: JEE-TOPICTESTS-CHEMISTRY

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