Which of the following statement is true?
Actinoid contraction is equally same as lanthanoid contraction
Actinoid contraction is smaller than lanthanoid contraction.
There is no actinoid contraction observed.
Actinoid contraction is greater than lanthanoid contraction
The contraction is greater from element to element in this series resulting from poor shielding by 5f electrons.
Actinoid contraction is greater from element to element than lanthanoid contraction. Why?