A short answer for the Rutherford atomic model: the atom is composed from a central part - a nucleus, positively charged, surrounded by electrons - very small negative charged particles.
Ernest Rutherford worked in Manchester (UK) and at Mac Gill (Canada).
The proton was discovered by Ernest Rutherford in 1917. Rutherford identified the proton while conducting experiments on the structure of the atom.
Because he wanted to.
in 1897
In the exact center of the atom.
A short answer for the Rutherford atomic model: the atom is composed from a central part - a nucleus, positively charged, surrounded by electrons - very small negative charged particles.
Ernest Rutherford used the technology of radioactivity and conducted the famous gold foil experiment to discover the structure of the atom. By directing alpha particles at a thin gold foil, he observed how they were deflected, which led to the understanding that atoms have a small, positively charged nucleus at their center.
Rutherford
The structure of the atom was discovered by Ernest Rutherford and Niels Bohr. Rutherford's gold foil experiment led to the discovery of the nucleus, while Bohr proposed the planetary model of the atom with electrons orbiting the nucleus in specific energy levels.
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
Bohr did not discover this. Ernest Rutherford 'discovered' the nucleus. This was done in 1911.