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Chemistry
The elements in which electrons are progressively filled in 4f orbital are called
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Q. The elements in which electrons are progressively filled in $4f$ orbital are called
Classification of Elements and Periodicity in Properties
A
actinoids
8%
B
transition elements
11%
C
lanthanoids
79%
D
halogens.
3%
Solution:
In lanthanoids, electrons are progressively filled in $4f$ orbital.