How much of an atom is empty space?

Q: How much of an atom is empty space?

About 99.9999999999% — nearly all of it.. If a hydrogen atom were as tall as a cathedral, the nucleus would be a fly at the altar. 'Solid' matter is a comforting illusion.

Question

Accepted Answer

About 99.9999999999% — nearly all of it. — If a hydrogen atom were as tall as a cathedral, the nucleus would be a fly at the altar. 'Solid' matter is a comforting illusion.