Dmitri Mendeleev
Mendeleev's version of the Periodic Table was organized by increasing mass. The modern periodic table is now organized by atomic number.
Mendeleev arranged the periodic table according to increasing atomic mass. This method has been used since he first developed it in the 1800s.
He organized the elements by the increasing order of the atomic mass.
mendleev
Arranging the Periodic Table by atomic number rather than Atomic Mass was first suggested by a British man named Henry Moseley in 1913. Before that point, the periodic table was organized by atomic mass, and has several inconsistencies and problems.
before it there was no organization, but the first periodic table was organized by atomic mass.
the original periodic table was based on th elements it had
Dmitri Mendeleev and Lothar Meyer
The periodic table was first organized by atomic mass. However, after the discovery of isotopes and inconsistencies around this method, it was later rearranged based on atomic number, which reflects the number of protons in an atom's nucleus.
Dmitri Mendeleev is credited with arranging the periodic table based on atomic masses. He organized the elements with similar properties into columns known as groups or families, laying the foundation for the modern periodic table we use today.
He is called the "Father of the periodic table" because he organized the elements according to increasing atomic mass.
Mendeleev arranged elements in order of increasing mass. Later modern periodic table was discovered that contains elements arranged by atomic number.