In string theory a string is a one-dimensional object. It has length, but no width or height. It's hard to compare a one-dimensional object with a three-dimensional object like an atom in any meaningful way.
About the best answer that can be given is that if it turns out that string theory or one of its variants is correct, atoms are composed of objects that are themselves made up of strings.
The Universe was never smaller than an atom.
A proton is smaller than a nucleus, which is smaller than an atom, which is again smaller than a molecule.
Smaller
an electron is much much smaller than an atom. An electron is a portion of the nucleus in an atom.
An atom comprises an atomic nucleus with orbiting electrons. So the nucleus is smaller than an atom. To phrase it the opposite way, an atom is alwys larger than the nucleus (of the same atom of course!!)
The Universe was never smaller than an atom.
A proton is smaller than a nucleus, which is smaller than an atom, which is again smaller than a molecule.
it can get smaller than an atom
An atom is smaller than a compound because if an electron fits in an atom, and an atom is a part of a compound, it means a compound is bigger than an atom
Smaller
smaller
Rubidium is a neutral atom in its elemental form. The rubidium ion, found in rubidium compounds, is smaller than a neutral rubidium atom.
Smaller
an electron is much much smaller than an atom. An electron is a portion of the nucleus in an atom.
An atom is millions of times smaller than a virus which is thousands of times smaller than a bacterium.
Neutrons, protons, and electrons make up an atom, so they are smaller.
A particle smaller than atom is a subatomic particle, protons , neutrons, and , electrons, the smallest one is an electron, smaller than that are point particles and elementary particles, one elementary particle and point particle is a quark, up quarks down quarks the smallest single thing found so far is a GLUON, which is the force which binds/holds quarks together. Where the devil lives in anti matter there are also atoms and subatomic particles and point particles but just anti, anti- GLUON, anti-QUARK, anti-ATOM, anti-SUBATOMIC PARTICLE. There is something called the string theory, and super string theory that theorizes about bosonic/boson strings but it can not be provine yet, and I think a gluon is still alot smaller than a bosonic/boson string if they are true. HOPE THIS HELPS