which scientist first attempted to construct a periodic table based on an element's atomic mass? a. moseley b. dalton c. newton d. mendeleev
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History of the periodic table The Russian chemist Dmitri Mendeleev was the first scientist to make a periodic table similar to the one used today. [citation needed] Mendeleev arranged the elements by atomic mass, corresponding to relative molar mass.
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Newlands' Periodic Table He arranged all the elements known at the time into a table in order of relative atomic mass. When he did this, he found that each element was similar to the element eight places further on. For example, starting at Li, Be is the second element, B is the third and Na is the eighth element.
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- Mendeleev also arranged the elements known at the time in order of relative atomic mass relative atomic mass: The relative atomic mass is the number of times heavier an atom is compared to one twelth of a carbon-12 atom., but he did some other things that made his table much more successful.
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- Mendeleev also arranged the elements known at the time in order of relative atomic massrelative atomic mass: The relative atomic mass is the number of times heavier an atom is compared to one twelth of a carbon-12 atom., but he did some other things that made his table much more successful.
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Atomic theory Dalton estimated the atomic weights according to the mass ratios in which they combined, with the hydrogen atom taken as unity. However, Dalton did not conceive that with some elements atoms exist in molecules — e.g. pure oxygen exists as O 2. He also mistakenly believed that the simplest compound between any two elements is always one atom of each (so he thought water was HO, not H 2 O).
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Who Invented the Periodic Table? Answer: If you answered Dmitri Mendeleev then you might be incorrect. Dmitri Mendeleev presented his periodic table of the elements based on increasing atomic weight on March 6, 1869, in a presentation to the Russian Chemical Society.While Mendeleev's table was the first to gain some acceptance in the scientific community, it was not the first table of its kind. year earlier (1864) Lothar Meyer published a periodic table which described the placement of 28 elements. Meyer's periodic table ordered the elements into groups arranged in order of their atomic weights.
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Newlands' Periodic Table An English scientist called John Newlands put forward his law of octaves in 1864. He arranged all the elements known at the time into a table in order of relative atomic mass. When he did this, he found that each element was similar to the element eight places further on.
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- One breakthough was to decided that Atomic Weight was not wholly reliable, since some pairs of elements made a lot more sense if ranked slightly out of place. Niels Bohr worked out the basics of atomic structure, which for the first time explained why the Periodic Table was as it was.
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Which scientist laid the foundation for atomic theory? A. Niels Bohr B. Ernest Rutherford C. John Dalton The scientist that laid the foundation for atomic theory is : C. John dalton He was the first one that pioneered the development of modern atomic theory hope this helps
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- Dmitri Mendeleev was a Russian chemist; he proposed the modern periodic table of elements in 1869. 9 people found this useful. Edit. Share to: 1  Dmitri Mendeleev: Major Contributor to Science Russian chemist Dmitri Mendeleev was born in a small village near Siberia in 1834.2  His primary field of study was chemistry, but he also contributed to physics and mathematic…. 3  The Periodic Table of Elements Life is sustained by a number of chemical elements.mitri Mendeleev proposed one of the early versions of the periodic  table. He also arranged the elements in the increasing order of  their increasing atomic mass and repeat … ing properties. 3 people found this useful. Des Dichado.
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Elements and Atoms: Chapter 12 Mendeleev's First Periodic Table Mendeleev's First Periodic Table. Dmitrii Mendeleev (1834-1907; see photo in Chemical Achievers at the Chemical Heritage Foundation) was born in Tobolsk, in Western Siberia. His chief contribution to chemistry was the establishment of the periodic system of elements. Mendeleev was one of a number of independent discoverers of the periodic law in the 1860s--that number ranging from one [Leicester 1948] to six [van Spronsen 1969] depending on the criteria one adopts.
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âWHAT HAPPENS WHEN I STOP TAKING CREATINE?â If you’ve been supplementing with creatine for any real length of time now, you might be wondering what will happen if you stop using it for a set period, or even altogether.
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- The two men that are credited with the development of the first periodic tables in 1869 are Dmitri Mendeleev and Lothar Meyer. They produced similar periodic tables indepe … ndently. Lothar Meyer's table was actually publishes in 1870, a year after Mendeleev.
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- Mendeleev was the first to make a periodic table and it was published in 1869. + 8 others found this useful. Sandeep Gill. Edit. Share to: 1  The Periodic Table of Elements Life is sustained by a number of chemical elements. 2  They are responsible for the birth of planets and the evolution of cells to complex organisms.
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- From this table, Mendeleev developed his statement of the periodic law and published his work On the Relationship of the Properties of the Elements to their Atomic Weights in 1869 (view a copy of Mendeleev's table as published in Annalen suppl. VIII, 133 (1871).
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Key Points Dalton hypothesized that the law of conservation of mass and the law of definite proportions could be explained using the idea of atoms. He proposed that all matter is made of tiny indivisible particles called atoms, which he imagined as solid, massy, hard, impenetrable, movable particle(s).
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- The Periodic TableDmitri Mendeleev created the first periodic table according to atomic mass in 1869. Others before Mendeleev had organized the elements according to their pro … perties and were able to discern periodicity, although Mendeleev is generally accepted as the creator of the table.endeleev intended the table to illustrate recurring (periodic) trends in the properties of the elements. The layout of the table has been refined and extended over time, as new elements have been discovered, and new theoretical models have been developed to explain chemical behavior.
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atom Modern atomic theory begins with the work of John Dalton, published in 1808. He held that all the atoms of an element are of exactly the same size and weight (see atomic weight) and are in these two respects unlike the atoms of any other element.
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Periodic table history In 1863 English chemist John Newlands divided the then discovered 56 elements into 11 groups, based on characteristics. In 1869 Russian chemist Dimitri Mendeleev started the development of the periodic table, arranging chemical elements by atomic mass. He predicted the discovery of other elements, and left spaces open in his periodic table for them. In 1886 French physicist Antoine Bequerel first discovered radioactivity. In 1897 English physicist J. J. Thomson first discovered electrons; small negatively charged particles in an atom.
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How Many Elements Are in the Periodic Table? Russian scientist Dmitri Mendeleev is usually credited with the first known publication of a periodic table of elements, in 1869. He created the table by arranging known elements into rows and columns based on atomic weight and the similarity between elements.
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John Dalton and the Scientific Method Many consider 2008 the 200th anniversary of atomic theory, John Dalton’s momentous theory of the nature of matter. Dalton (1766–1844) proposed that all matter in the universe is made of indestructible, unchangeable atoms—each type characterized by a constant mass—that undergo chemical reactions by joining with and separating from each other.
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Henry Moseley Henry Moseley. English physicist Henry Moseley, who arranged the Periodic Table in order of the atomic numbers of the elements. Henry Moseley's research career lasted only forty months before tragically ending with his death on a Gallipoli battlefield in World War I. But in his classic study of the x-ray spectra of elements, he established the truly scientific basis of the Periodic Table by arranging chemical elements in the order of their atomic numbers. Henry Gwyn Jeffreys Moseley, who was always called Harry by his family, was born in Weymouth, England, on November 23, 1887.
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- Dmitri Mendeleev was the inventor of the old periodic table but Henry Moseley changed the concept of atomic weight to atomic number and thus he corrected the defects in the old periodic table and he is called as the father of Modern Periodic Table.
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- Modern Atomic Theory (John Dalton) Experiments with gases that first became possible at the turn of the nineteenth century led John Dalton in 1803 to propose a modern theory of the atom based on the following assumptions. 1. Matter is made up of atoms that are indivisible and indestructible. 2. All atoms of an element are identical. 3.
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The Periodic Table The periodic table we use today is based on the one devised and published by Dmitri Mendeleev in 1869. Mendeleev found he could arrange the 65 elements then known in a grid or table so that each element had: 1. A higher atomic weight than the one on its left. For example, magnesium (atomic weight 24.3) is placed to the right of sodium (atomic weight 23.0):
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- In his 1808 publication ‘A New System of  Chemical Philosophy’, he coined the atomic theory and was the first scientist to prepare a table on atomic weights. This theory is considered valid even today and laid the foundation for further studies in this field.