Answer is: true. Actinoids are in 7 period in Periodic table and valence orbit is 7s². Ac - [Rn] 6d¹ 7s². Th - [Rn] 6d² 7s². Pa - [Rn] 5f² 6d¹ 7s². U - [Rn] 5f³ 6d¹ 7s². Np - [Rn] 5f⁴ 6d¹ 7s². Pu - [Rn] 5f⁶ 7s². Am - [Rn] 5f⁷ 7s². Cm - [Rn] 5f⁷ 6d¹ 7s². Bk - [Rn] 5f⁹ 7s². Cf - [Rn] 5f¹⁰ 7s².
