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Rutherford: Being the Life and Letters of the Rt. Hon. Lord Rutherford, O. M. MacMillan. Ernest Rutherford (1899). "Uranium Radiation and the Electrical conduction Produced by it". Philosophical Magazine. 47 (284): 109– 163. Ernest Rutherford (1911). "The Scattering of α and β Particles by Matter and the Structure of the Atom" (PDF).
It is named after physicist Ernest Rutherford. As a synthetic element, it is not found in nature and can only be made in a particle accelerator. It is radioactive; the most stable known isotope, 267 Rf, has a half-life of about 48 minutes. In the periodic table, it is a d-block element and the second of the fourth-row transition elements.
1918 Ernest Rutherford notices that, when alpha particles were shot into nitrogen gas, his scintillation detectors showed the signatures of hydrogen nuclei. 1921 Alfred Landé introduces the Landé g-factor; 1922 Arthur Compton studies X-ray photon scattering by electrons demonstrating the 'particle' aspect of electromagnetic radiation.
1911 – Ernest Rutherford: Discovery of the atomic nucleus (Rutherford model) 1911 – Kamerlingh Onnes: Superconductivity; 1912 - Victor Francis Hess: Cosmic rays; 1913 – Niels Bohr: Bohr model of the atom; 1915 – Albert Einstein: General relativity; 1915 – Emmy Noether: Noether's theorem relates symmetries to conservation laws.
The Rutherford model is a name for the first model of an atom with a compact nucleus. The concept arose from Ernest Rutherford discovery of the nucleus. Rutherford directed the Geiger–Marsden experiment in 1909, which showed much more alpha particle recoil than J. J. Thomson's plum pudding model of the atom could explain. Thomson's model had ...
The classical model of the atom is called the planetary model, or sometimes the Rutherford model—after Ernest Rutherford who proposed it in 1911, based on the Geiger–Marsden gold foil experiment, which first demonstrated the existence of the nucleus. However, it was also known that the atom in this model would be unstable: according to ...
An atom with seven electrons arranged in a pentagonal dipyramid, as imagined by Thomson in 1905. The plum pudding model is an obsolete scientific model of the atom.It was first proposed by J. J. Thomson in 1904 following his discovery of the electron in 1897, and was rendered obsolete by Ernest Rutherford's discovery of the atomic nucleus in 1911.
The modern periodic table is based on atomic number, which is equivalent to the nuclear charge, a change had to wait for the discovery of the nucleus. [37]: 228 In addition, an entire row of the table was not shown because the noble gases had not been discovered when Mendeleev devised his table. [37]: 222