Question: "What is the boiling point of radium?"

A search using AltaVista on +"boiling point" +radium yielded the following:

from there to

Resulting in: melting point=973.2 K ,   boiling point 1973 K

Information valid for Ra-266:  Melting Point: 700, Boiling Point: 1737, (units unknown).

Melting Point (°C): 700, Boiling Point (°C): 1140

Melting point 973 K, Boiling point 2010 K

973 Melting Point, K

1413 Boiling Point, K

melting point 973.2 K

boiling point 1973 K

Melting point K 973

Boiling point K 1809

Melting Point (° C): 700.05

Boiling Point (° C): 1699.85