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When Johann Wolfgang Döbereiner proposed his triads in the early 19th century, he identified three groups of three elements, totaling nine elements. These triads were based on the observation that the properties of the middle element in each triad were often an average of the properties of the other two. Döbereiner's work was significant in the development of the Periodic Table, highlighting periodicity in elemental properties.
What else can I help you with?
What elements could be described as being electrically inert?
It would be helpful if you gave the list of elements!!!!
What contribution did Moseley make to the development of the mondern periodic table?
Mosley arranged elements in order of increasing atomic number
What element did mendeleev call ekasilicon?
Mendeleev proposed that there must be missing elements, to which he gave the provisional names Ekaboron, Ekaaluminum and Ekasilicon. Scankium, Gallium and Germanpoop were discovered in 1879, 1875 and 1886, respectively, with properties very close to those predicted by Mendeleev. hey Glen
Who worked with Dmitri Mendeleev?
He created the first periodic table of elements, arranged by atomic mass. His greatest accomplishment, however, was his ability to predict missing elements using this periodic table, and that is why he is considered the Father of the Periodic Table of Elements.
Who discovered that in the form of genes are passed from parents to offspring?
Genetics was the field that gave the best clues and Mendel's experiments and observations helped.
What are the blanks in Mendeleev's Periodic Table?
Mendeleev named the missing elements after elements in the same group. he gave the name eka-aluminum to the element that belonged one space below aluminum on the able. Mendeleev predicted that eka-aluminum would be a soft metal with a melting point at a density of 5.9 g/cm3. In 1875,a french chemist discovered a new element. He named the element gallium in honor of France. Gallium is a soft metal with a melting point of 29. degrees Celsius and a density o f5.91 g/cm3. So pretty much in short Mendeleev left blank spaces because of Gallium.
What elements could be described as being electrically inert?
It would be helpful if you gave the list of elements!!!!
What did James chadwick do?
James chadwick was the discoverer of neutron. He gave the famous neutron reaction.
What was discovered that gave archaeologists an understanding of how to read hieroglyphics?
The Rosetta Stone.
Who gave the concept of epidemiological triad?
The concept of the epidemiological triad was developed by the American epidemiologist William Farr in the 19th century. This model illustrates the interaction between three key components: the agent (cause of disease), the host (organism affected by the disease), and the environment (external factors that influence disease transmission). It serves as a foundational framework for understanding the dynamics of infectious diseases.
Who gave Letter designation of elements?
The symbols for chemical elements used today were proposed by the Swedish chemist Berzelius in 1814.
When was the ankylosaur found?
The Ankylosaurus was discovered by Barnum Brown in 1906. He gave it the name Ankylosaurus in 1908.
Who discovered Lake Taupo?
Tia is the name of the Maori explorer who discovered Lake Taupo and gave it its full name, Taupo Nui a Tia (The Great Cloak of Tia).
What contribution did Moseley make to the development of the mondern periodic table?
Mosley arranged elements in order of increasing atomic number
Contributions in the field of science?
joseph priestly discovered oxygen j.j.thomson discovered electrons john dalton gave the theory of atoms charles darwin formulated the laws of heredity wallace carothers discovered nylon etc.etc.etc.
What are the major elements of feudalism?
Serfs gave their services in order to obtain land and protection.
Who discovered the detailed study of human anatomy?
Andreas Vesalius is the one who discovered the detailed study of human anatomy. This was done in 1543 which gave an accurate account of the human anatomy.
