Statement 1: Actinoid contraction is greater from element to element than lanthanoid contraction.
Statement 2: 5f orbitals have a poorer shielding effect than 4f orbitals.
1. Statement 1 is true, statement 2 is false.
2. Statement 1 is false, statement 2 is true.
3. Both statements are false.
4. Both statements are true.