What is the Boiling Point of Actinium? 
The Boiling Point of Actinium is 3200°C
 What is the Melting Point of Actinium? 
The Melting Point of Actinium is 1050°C
 What is the Ionic Radius of Actinium? 
The Ionic Radius of Actinium is --
 Who discovered Actinium?
Actinium was discovered by André Debierne.
 What period is Actinium located?
Actinium is in the Period 7.
 What block is Actinium located? 
Actinium is located in the F Block block.
 What does the name Actinium come from? 
Greek: akis, aktinos (ray).
 What is the electronegativity of Actinium? 
Actinium has an electronegativity of 1.1.
 What are the orbitals of Actinium? 
The orbitals of Actinium are [Rn] 6d1 7s2.