Discussion on D And F Block Elements


 

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Posted on: 06:04:13 PM on May 18, 2016
Posted By:
RAJIV RANJAN
What is lanthanide contraction?


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Posted on: 06:09:35 PM on May 18, 2016
in lanthanoide series,due to the decrease in shielding effect between 4f orbitals thereis an sharp decrease in the atomic radius of these elements.



Posted on: 06:53:15 AM on February 23, 2018
The lanthanide contraction is the greater-than-expected decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, which results in smaller than otherwise expected ionic radii for the subsequent elements starting with 72, hafnium.





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