AP EAMCET · Chemistry · Classification of Elements and Periodicity in Properties
In lanthanides, with increase in atomic number atomic radius decreases, except for the element . What is ?
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
In lanthanide, 4f orbital has poor shielding effect therefore, size decreases with increase in atomic number as we move from Ce to Lu but Eu is an exception and have the largest size among all lanthanide.
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