How did Mendeleev organize the elements?

Mendeleev arranged the elements in order of increasing relative atomic mass . When he did this he noted that the chemical properties of the elements and their compounds showed a periodic trend .

What was Mendeleev’s table organized by?

increasing atomic weight
Mendeleev ostensibly organized his table by increasing atomic weight, but he gave chemical properties a deciding vote. For example, tellurium is slightly heavier than iodine, but Mendeleev put tellurium first because it has the same valence as oxygen, sulfur, and other elements in its group.

How did Mendeleev organize the elements quizlet?

How did Mendeleev organize the elements in his periodic table? arranged the elements into rows in order of increasing mass so that elements with similar properties were in the same column.

How are the elements organized?

The chemical elements are arranged from left to right and top to bottom in order of increasing atomic number, or the number of protons in an atom’s nucleus, which generally coincides with increasing atomic mass.

How are elements of the periodic table arranged?

What is Mendeleev known for?

Dmitri Mendeleev devised the periodic classification of the chemical elements, in which the elements were arranged in order of increasing atomic weight.

How are the elements organized in the periodic table quizlet?

In the modern periodic table, elements are arranged by increasing atomic number (number of protons). Properties of elements repeat in a predictable way when atomic numbers are used to arrange elements into groups.

Who first arranged the periodic table?

Dmitri MendeleevPeriodic table / Inventor

How were the elements originally organized?

British chemist John Newlands was the first to arrange the elements into a periodic table with increasing order of atomic masses. He found that every eight elements had similar properties and called this the law of octaves. He arranged the elements in eight groups but left no gaps for undiscovered elements.

How are the groups organized in the periodic table?

The periodic table is organized into groups (vertical columns), periods (horizontal rows), and families (groups of elements that are similar). Elements in the same group have the same number of valence electrons. Meanwhile, elements in the same period have the same number of occupied electron shells.