I am not so sure, but based on what I'm seeing on the periodic table, the answer should be 3,827 degrees Celsius.
<span><span>4.2×<span>1022</span></span><span>NA</span></span><span>
N_{A} is the avagadro number</span>
Density and mass increases
Chemical is the answer to the question, but nuclear could also be a valid one since it is nearly impossible to reverse that.