Any subatomic particle, like any particle in the three-dimensional space that obeys the laws of quantum mechanics, can be either a boson (with integer spin) or a fermion (with odd half-integer spin).

Dec 12, 2025 · The small size of subatomic particles is perhaps most convincingly expressed not by stating their absolute units of measure but by comparing them with the complex particles of which …

Since the electron cloud is much larger than the nucleus, most of an atom is empty space. An atom is about 10 ⁻10 m in size, while the nucleus, at 10 ⁻15 m, is 100,000 times smaller.

I have written elsewhere about my take on how "size" works in quantum mechanics. The short answer is that the best "size" is probably the wavelength.

The size of the nucleus is miniscule when compared to the size of the atom. Consider this comparison: If the nucleus were the size of a golf ball, then the atom would be roughly the size of a professional …

Dec 3, 2024 · Subatomic Particles: Size Comparison of Protons, Neutrons, and Electrons. Atoms are not empty spheres—they consist of smaller particles called protons, neutrons, and electrons. But how do …

Aug 22, 2025 · Deeper than the atomic scale are subatomic particles, many of which are fundamental, meaning they are not known to be made of anything smaller. Protons and neutrons, once thought to …

Dec 27, 2023 · Known as the "Standard Model of Particle Physics", there are 17 subatomic particles which cannot be broken down into smaller components. But determining particle size is tricky, as …

The subatomic scale is the domain of physical size that encompasses objects smaller than an atom. It is the scale at which the atomic constituents, such as the nucleus containing protons and neutrons, and …

But there’s one subatomic particle that’s far smaller still, and not even the most powerful particle accelerator has come close to pinning down its size: the electron.