Questions
The lantharude contraction is responsible for the fact that:
detailed solution
Correct option is C
The size of Zr and Hf is the same because of lanthanide synthesis. The shielding effect can be used to explain lanthanide contraction. The electrons in multi-electron atoms are added to the outer shells. The outer electrons are protected from nuclear charge by the electrons already in the inner shells, resulting in a lower effective charge of the nucleus for them. The inner electrons' shielding effect diminishes in the order of .
This f subshell does a poor job of protecting the outer electron from nuclear attraction, which leads to a stronger pull from the nucleus and a smaller size. The 4f subshell is filled in the case of post-lanthenide elements like Hf, but it is not particularly efficient at protecting the outer shell. electrons with and . Zr is comparable to it.
Talk to our academic expert!
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests