Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
Across the lanthanide series, the basicity of the lanthanide hydroxides
Chemistryd and f Block ElementsVITEEEVITEEE 2010
Options:
  • A increases
  • B decreases
  • C first increases and then decreases
  • D first decreases and then increases
Solution:
1737 Upvotes Verified Answer
The correct answer is: decreases
We know that basicity is depend on ionic character. So, as the ionic size of lanthanide decreases, the covalent character of their hydroxide increases. Hence, their basicity decreases.

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.