The nucleus is the very dense region consisting of nucleons (protons and neutrons) at the center of an atom. Almost all of the mass in an atom is made up from the protons and neutrons in the nucleus, with a very small contribution from the orbiting electrons. It was discovered in 1911, as a result of Ernest Rutherford's interpretation of the famous 1909 Rutherford experiment performed by Hans Geiger and Ernest Marsden, under the direction of Rutherford.
The diameter of the nucleus is in the range of 1.75 FM (1.75×10−15 m) for hydrogen (the diameter of a single proton)[1] to about 15 FM for the heaviest atoms, such as uranium. These dimensions are much smaller than the diameter of the atom itself (nucleus + electronic cloud), by a factor of about 23,000 (uranium) to about 145,000 (hydrogen).
* The atomic nucleus (chemistry, physics) - Ernest Rutherford
* The cell nucleus (Biology) - Antonie van Leeuwenhoek
Bohr did not discover this. Ernest Rutherford 'discovered' the nucleus. This was done in 1911.
The nucleus was discovered in 1899.
No, he didn't discover it but obsered it through his primitive microscope.
in 1897
Gold foil experiment.
In the exact center of the atom.
Rutherford supposed that the atomic nucleus is very small compared to whole atom.
Rutherford and collab. discovered the atomic nucleus.
Well, first of all scientific hygrenals used by scientists made it easy to discover it.
He discovered it with one of those old microscopes
That most of an atom's mass was packed in a central nucleus
That most of an atom's mass was packed in a central nucleus