De or het kernsplijtstof?

The correct Dutch article is:

de kernsplijtstof

How to use kernsplijtstof

the kernsplijtstofde kernsplijtstof
this kernsplijtstofdeze kernsplijtstof
that kernsplijtstofdie kernsplijtstof
our kernsplijtstofonze kernsplijtstof
your kernsplijtstofjouw kernsplijtstof
every kernsplijtstofelke kernsplijtstof
which kernsplijtstof?welke kernsplijtstof?
a big kernsplijtstof / the big kernsplijtstofeen grote kernsplijtstof, de grote kernsplijtstof