That depends on your definition of 'nucleus'. The nucleus or core of an atom is, obviously, smaller than the atom as a whole. But seeing as you placed this question in Biology, a cellular nucleus is many billions of times the size of an atom.
We know that the nucleus of an atom contains the nucleons, the protons and neutrons that make up that atom. This is almost all the mass of the atom, and these protons and neutrons are bound very tightly. That translates into the fact that the nucleus takes up almost none of the volume that the atom as a whole occupies. The orbiting electrons that are in the electron cloud actually define the volume of the atom. And that atom's volume is really large compared to that of the nucleus. We might say that the nucleus contains almost all of the mass of the atom, and takes up almost none of its volume. The difference between the size of the atomic nucleus and the size of the whole atom is that dramatic.
We have two examples: the first is, if the Atom is the size of a New York Baseball stadium, then the nucleus is the size of a flea perched on the pitcher's mound; and next, if the atom is one mile [1.6 km] across the atomic nucleus would be two-thirds of an inch [< 2 cm] in diameter. From this we can state that the Atom is 99.9999 % empty space.
The nucleus of an atom consists of protons and neutrons. Electrons Orbit the nucleus. Protons and neutrons are approximately the same mass and about 1875 X the mass of an electron.
Size wise nuclei range from 15 fm to 75 fm (fm is a femtometre, 10-15 metres) Electrons are 2 fm (classical approximation) although bearing in mind quantum mechanics and heisenbergs principle this is perhaps less meaningful than the size of the nucleus., the Compton wavelength of the electron is 2.4 X10-12 m about 2400 fm.
Incredibly small. About 1/10000 the diameter.
Electron in an atom is represented by electron cloud around the nucleus
An electron in a 2s orbital is on average closer to the nucleus.
The particle not found in the nucleus is the electron
The sub-atomic particle that orbits the nucleus in an atom is called an electron.
The electron is the sub-atomic particle that orbits the nucleus of an atom of matter. For anti-matter the sub-atomic particle that orbits the nucleus is the anti-electron (positron).
The nucleus is far more massive than the electron cloud. The mass of the electron cloud is almost negligible compared to that of the nucleus.
The space around the nucleus of an atom is called the electron cloud. The electron cloud is the space in which the electrons of that atom travel. Compared to the nucleus, the electron cloud is enormous.
A proton is bigger than electron
A proton is bigger than electron
its big but not that big compared to the nucleus
The mass of the nucleus makes up most all of the mass of an atom. The only things outside the nucleus are the electrons. The mass of an electron is ~9.11E-31 kg. The mass of an electron is 1/1836 that of a proton.
The nucleus of an atom is made of neutrons and protons. Electrons move around the outside of the nucleus. The number of electrons around an atoms nucleus compared to the number of protons in the nucleus determines the charge of an atom, and the charge of an atom effects the way that an atom reacts with other atoms.
Think of the sun as the nucleus and the oort cloud (past pluto) as where the electron orbitals start. The size (volume) of the nucleus is tiny compared to the size (volume) of the atom (defined by the extent of the electron cloud).
The farther an electron is from the nucleus, the greater its energy.
nucleus is in the middle and the electron cloud is around it
Less then half or maybe a third of the size.
The halogen ions are big compared to their normal atoms as they gain one extra electron because of the resultant ionic bond that is formed.