How does the size of the moon’s core support the impact of the moon’s formation?

The span of the moons center has nothing to do with the effect hypothesis, however has a remark with materials on the moon itself.
Since this hypothesis itself did not merged with regards to the arrangement for the lunar center however it emerged as a result of the materials that make up the moon itself in light of the fact that the materials that make up the moon contrasted with our own particular planet looks like an enormous similitude.

Or the answer will be:

If the event that effect the hypothesis is r8ght at that point after the impact material from the surface and mantle of the earth was brushed off into space gathering into the moon. There would be next to no material to shape a gigantic center.