Which sub shell is filled up progressively in actinoids?
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5f
Explanation:
5f sub shell is filled up progressively in actinoids.
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The radius of $La^{3+} ($atomic number of $La = 57)$ is $1.06A.$ Which one of the following given values will be closest to the radius of $Lu^{3+}$? $($atomic number of $Lu = 71)$