What is smaller electron or nucleus?

Answer 1

In terms of mass , the electron is smaller.

In a table of Atomic particle masses ;-

Proton is given an arbitrary mass of '1' , with a plus (+) charge

Neutron is given an arbitrary mass of '1' , with no (0) charge

Electron is given an arbitrary mass of '1/1860' , with a minus(-) charge.

As you can see from the table, electrons are much less massive than protons, and neutrons.

The actual masses of these particles can be found in 'Wikipedia'.

Answer 2

Atomic nuclei are much-much smaller than cell nuclei.

Why? Because a cell nucleus contains an enormous number of molecules, each molecule built from a number of atoms, with every single atom containing a tiny little (atomic) nucleus. For instance, an oxygen atom (which is a common component of living cells - think about water, H2O) is about 20 thousand times larger in diameter than its (atomic) nucleus.

Actually, if you magnified a typical cell nucleus (6 μm of diameter for average mammalian cells) to the size of the Earth (diameter of Earth: 12756.2 km), then the oxygen's atomic nucleus (actual diameter: 5.4 fm) would look like a half-inch (12.8 mm) ball at the same magnification.

That means that - as far as size is concerned - the atomic nucleus compares to the cell nucleus as a blueberry (or a smaller hazelnut) compares to our planet.

Answer 3

It depends on what you mean by "small." The nucleus contains essentially all the mass of the atom, so in terms of mass an electron is much smaller than either an atom or a nucleus. However, the volume occupied by the electrons in an atom is essentially the same as the volume of the atom itself. The nucleus is much, much smaller in extent.

Answer 4

An electron is smaller than a nucleus. Electrons are elementary particles that orbit the nucleus of an atom, which is made up of protons and neutrons. The nucleus is much larger and contains most of the mass of an atom.

Answer 5

Electron is the smallest thing the world currently knows now.