The atomic number. ~SuperCat
Mendeleev arranged the known chemical elements in a table according to increasing atomic mass and similar chemical properties. This arrangement led to the periodic table of elements, where elements with similar properties fall into the same column or group. This organization allowed Mendeleev to predict the properties of undiscovered elements and leave spaces for them in the table.
Mendeleev positioned the elements primarily based on their atomic mass and their chemical properties. He arranged them in a periodic table format, grouping elements with similar properties into columns, which allowed him to predict the existence and properties of undiscovered elements. This arrangement highlighted the periodic trends in element behavior, demonstrating that properties recur at regular intervals when elements are ordered by increasing atomic mass.
In the modern periodic table, elements are arranged according to increasing atomic number, which represents the number of protons in the nucleus of an atom. This arrangement helps to group elements with similar chemical properties in the same columns, known as groups or families.
Dmitri Mendeleev arranged the elements in his periodic table by increasing atomic mass because he noticed a periodic pattern in properties repeating every 8th element. This arrangement allowed him to predict the properties of undiscovered elements and left gaps for them in his table.
Mendeleev arranged elements in his periodic table on the basis of increasing atomic masses.
Dmitri arranged elements in rows and columns. According to him, the properties of elements are periodic functions of their atomic weights.
Mendeleev arranged the known chemical elements in a table according to increasing atomic mass and similar chemical properties. This arrangement led to the periodic table of elements, where elements with similar properties fall into the same column or group. This organization allowed Mendeleev to predict the properties of undiscovered elements and leave spaces for them in the table.
Mendeleev arranged elements based on their atomic weights and chemical properties. He noticed that when he arranged elements in order of increasing atomic weight, certain properties repeated at regular intervals, leading to the development of the periodic table.
Mendeleev arranged the elements in his periodic table in order of increasing atomic mass while also grouping elements with similar properties together. His periodic table laid the foundation for the modern periodic table we use today.
Dmitri Mendeleev
In the modern periodic table, elements are arranged according to increasing atomic number, which represents the number of protons in the nucleus of an atom. This arrangement helps to group elements with similar chemical properties in the same columns, known as groups or families.
Mendeleev arranged elements in his periodic table on the basis of increasing atomic masses.
Dmitri Mendeleev arranged the elements in his periodic table by increasing atomic mass because he noticed a periodic pattern in properties repeating every 8th element. This arrangement allowed him to predict the properties of undiscovered elements and left gaps for them in his table.
Dmitri arranged elements in order of increasing atomic masses. He considered chemical properties of the elements.
Mendeleev arranged the elements by their relative atomic mass. Each one of his rows began with an element that had 1 valency and ended it with inert gas elements. The creator of the Periodic Table, Dimitri Mendeleev, arranged the elements by atomic number (amount of electrons) and amount of electron shells. This then lead to columns (groups) of elements with the same amount of electrons in their outer shell. So, now, every period contains elements with ascending atomic numbers. Every group contains elements with ascending amounts of electron shells.
atomic numbers
Henry Moseley