1914
Using x-ray tubes, determined the charges on the nuclei of most atoms. He wrote"The atomic number of an element is equal to the number of protons in the nucleus". This work was used to reorganize the Periodic Table based upon atomic number instead of atomic mass.
No, every element exists in more than one form, called isotopes, which have the same number of protons and electrons, but different numbers of neutrons. Hydrogen, for example, usually has no neutrons, but there do exist two other hydrogen isotopes, deuterium having one neutron and tritium having two neutrons (most isotopes don't have their own names, hydrogen is unusual in that respect).
That is not true. They will have the same number of protons, but different isotopes of the same element will have a different number of neutrons. Carbon 12, 13 and 14 all have a different number of neutrons.
No, they must have the same number of protons, but the neutrons can differ. If there are different numbers of neutrons, we call the atoms isotopes of that element. Most element samples contain more than one isotope, in various proportions.
yes
Moseley was the first to clear and scientifically justify in 1913 the atomic number studying X-ray spectra of chemical elements.
But Moseley hadn't a personal atomic theory.
Each isotope has a specific number of neutrons.
False - Its not neutrons it is protons
Yes, it is true.
Rutherford
Henry Moseley discovered a relation between X-ray spectra and the atomic number of chemical elements.
Henry Moseley is the scientist who discovered that the atomic number rather than the atomic weight is more responsible for the properties of an element.
Mosley arranged elements in order of increasing atomic number
Henry Moseley.
Henry Moseley is a Physicist. He used x-rays and discovered the atomic number of each element, that led to more accurate organization of the periodic table. He arranged the elements in the periodic table by the number of protons of the elements not on the basis of atomic weights of the elements.
M.G mosly is the person. He discovered the atomic number.
Henry Gwyn-Jeffreys Moseley in the 1910s.
he knew that it had protons and neutrons and electrons but he thaught the charges where the wrong way round
Henry Moseley discovered a relation between X-ray spectra and the atomic number of chemical elements.
Moseley discovered a relation berween the atomic number and the wavelength of X-rays emitted by an element.
Henry Moseley is the scientist who discovered that the atomic number rather than the atomic weight is more responsible for the properties of an element.
Henry Moseley
Henry Moseley discovered a relation between the atomic number and the X-ray wavelength of a given chemical element; this was a physical confirmation of the periodic table and the order of elements in the table.
Moseley was the first to clear and scientifically justify in 1913 the atomic number studying X-ray spectra of chemical elements. But Moseley hadn't a personal atomic theory, he was not the discoverer of the atomic theory.
Moseley was the first to clear and scientifically justify in 1913 the atomic number studying X-ray spectra of chemical elements. But Moseley hadn't a personal atomic theory, he was not the discoverer of the atomic theory.
Moseley was the first to clear and scientifically justify in 1913 the atomic number studying X-ray spectra of chemical elements. But Moseley hadn't a personal atomic theory.
1913