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What was the property used to organize elements in the modern periodic table?
Wiki User
∙ 10y ago
The primary organizing characteristic is Atomic Mass. As the elements pass in the Periodic Table, the atoms' mass increase.
However a qick glance shows the elements are not presented in a long string, they double back to form a grid with rows and columns.
The rows (left to right) have the same number of atomic orbitals which fill up as the row movers from left to right. Starting a new row starts a new orbital.
The groups are the columns of elements (up and down) that have similar characteristics based on how full the orbital is. As an example every element in the firat column has one electron in its outer orbital. A warning the transitional elements do not follow this rule exactly but are in separate rows and column.
Finally at the top of the column are two single elements hydrogen (H) and Helium (He). They are made up by filling the smallest and most interior orbital (S) which has space for only two electrons. As a consequence hydrogen is stacked with the reactive metals and helium with the noble gases
Wiki User
∙ 10y ago
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∙ 11y agototal electrons
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What elements did Dmitri mendeleev discover?
In 1869, a total of 63 elements had been discovered by. A few were gases. Two were liquids. Most were solid metals.
Why did Dmitri mendeleev reverse the order of some elements in the periodic table?
He was bold enough to reverse the order of some pairs of elements and to predict that their atomic masses were incorrect. Some of these predictions were correct, but others were not, because we now know that the fundamental basis of the periodic table is atomic number rather than atomic mass.
Who created the periodic table as you know it today?
Short Answer:The creation of the Periodic Table of the Elements is credited to Dmitri Mendeleev.Long Answer:The Periodic Table of the Elements has no one creator. It has ten official contributors and is still being added to today. Here is a list of contributors, date of contribution, and the contribution as best as I can type it in this box.Aristotle -- ~330 BC -- Four element theory: earth, air, fire, and water.Antoine Lavoisier -- ~1770-1789 -- Wrote the first extensive list of elements containing 33 elements. Distinguished between metals and nonmetals.Jöns Jacob Berzelius -- 1828 -- Developed a table of atomic weights. Introduced letters to symbolize elements.Johann Döbereiner -- 1829 -- Developed 'triads', groups of three elements with similar properties.Lithium, sodium, and potassium formed a triad.Calcium, strontium, and barium formed a triad.Chlorine, bromine, and iodine formed a triad.John Newlands -- 1864 -- The known elements (less than 60) were arranged in order of atomic weights and observed similarities between the first and ninth elements, the second and tenth elements etc. He proposed the 'Law of Octaves'.Lothar Meyer -- 1869 -- Compiled a Periodic Table of 56 elements based on the periodicity of properties such as molar volume when arranged in order of atomic weight.Dmitri Mendeleev -- 1869 -- Produced a table based on atomic weights but arranged 'periodically' with elements with similar properties under each other. Gaps were left for elements that were unknown at that time and their predicted properties (the elements were gallium, scandium, and germanium). The order of elements was re-arranged if their properties dictated it, eg, tellerium is heavier than iodine but comes before it in the Periodic Table.William Ramsay -- 1894 -- Discovered the Noble Gases.Henry Moseley -- 1914 -- Determined the atomic number of each of the elements. He modified the 'Periodic Law' to read that the properties of the elements vary periodically with their atomic numbers.Glenn Seaborg -- 1940 -- Synthesised transuranic elements (the elements after uranium in the periodic table).
Where does the periodic table become wider?
In the modern day periodic table, the periodic table gets wider in periods two, four, and six.
Element named after the father of the periodic table?
mendelevium
Which property of an atom's structure was used to organize the periodic table?
The different elements are arranged in the increasing order of their atomic number and repeating chemical / physical properties.
What property is used to determine the order of the elements on the modern periodic table?
Number of protons PLUS number of valence electrons (plus - if needed - number of electrons in inner shell).
What is the main contribution of Dmitri Mendeleev in modern chemistry?
He made the periodic table. When he found gaps he said there were unknown elements, he was right and those elements were found in his lifetime.Mendeleev was the first person to organize the elements into what we would recognize as a version of the modern periodic table.
Which fundamental property of the elements is the basis of modern periodic table?
Atomic number is the fundamental property. Elements are arranged in order of increasing atomic number.
Who created or founded the periodic table?
Henry Moseley founded modern periodic table. He proved that atomic number is the fundamental property to arrange the elements.
What is a tool scientist use to organize the elements?
The elements are arranged in the increasing order of their atomic number and repeating properties.
How many elements are in the modern periodic table?
The Periodic Table has 118 elements and counting...
How does the modern periodic arrange the elements?
The modern Periodic Table arranges elements based on properties. These properties include valence electrons of the elements and density for example.
What is the similarities in the modern periodic table and Mendeleev's table?
They have simliar properties and same elements although later on more elements were added to the modern periodic table.=Both periodic tables have elements grouped by similar properties. Mendeleev's periodic table had elements arranged in order of increasing atomic mass in columns with similar properties. While many of the elements are in order of atomic mass on the modern periodic table, some are not, as the modern table has elements arranged in order of increasing atomic number.=
What best describes the modern periodic table?
Periodic table of elements.
What characteristics of the element is used to organize the modern periodic table?
Atomic weight
When the elements are arranged by increasing atomic number there will be a periodic repetition of their propertiesWhich theory is identified by this statement?
No. When the elements are arranged in order of increasing atomic number there is a periodic repetition of their physical and chemical properties.
