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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).
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When did Bohr discover that most of an atom's mass is in the nucleus?
Bohr did not discover this. Ernest Rutherford 'discovered' the nucleus. This was done in 1911.
When did Ernest ruthford discover that atoms have a nucleus?
The nucleus was discovered in 1899.
When did Ernest Rutherford discover the nucleus of the atom?
in 1897
How did Ernest Rutherford discover nucleus?
Gold foil experiment.
Where did Rutherford discover the atmoic nucleus?
In the exact center of the atom.
How discover is described by Rutherford?
Rutherford and collab. discovered the atomic nucleus.
Did Antonie van Leeuwenhoek discover the nucleus?
Antonie van Leeuwenhoek did not discover the nucleus. The nucleus was first described by Scottish botanist Robert Brown in 1831 while studying plant cells under a microscope. Van Leeuwenhoek is known for his pioneering work in microscopy and discoveries related to microorganisms.
What did Rutherford's discover that Thomson did not understand?
That most of an atom's mass was packed in a central nucleus
What did Rutherford discover that Thomas did not understand?
That most of an atom's mass was packed in a central nucleus
How Robert brown discover nucleus of the cell?
He discovered it with one of those old microscopes
When did Niels Bohr discover that electrons travel around an atomic nucleus?
The Bohr model for the atom is from 1913.
What subatomic particle did the gold foil experiment discover?
Rutherford's gold foil experiment did not discover the existence of any subatomic particles, but it did show the existence of a small, tightly packed, positively charged nucleus and thus led to the discovery of protons.
