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It was first organised in atomic number as they are organised in atomic mass now.

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Who organized the periodic table by atomic number?

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.


What is the atomic number of the element named for the scientist who first organized the periodic table?

That would be Mendelevium, of atomic number 101. Named after Dmitri Mendeleev.


What characteristic was used to organize the first periodic table?

Mendeleev arranged the periodic table according to increasing atomic mass. This method has been used since he first developed it in the 1800s.


How is the periodic table is organized into columns called?

The elements arranged according to their atomic number in the table are called periodic table.


How were elements arranged on the early Periodic Table of Elements?

before it there was no organization, but the first periodic table was organized by atomic mass.


When did the atomic number first appear on the periodic table?

The first atomic number appeared on the periodic table in August 1982. The first atom of the element meitnerium had the atomic number 109. The isotope of element 109 has an atomic mass of 266.


Who organized the very first periodic table?

The first periodic table was organized by Dmitri Mendeleev in 1869. Mendeleev arranged elements according to their atomic weight and properties, leaving gaps for unknown elements that were later discovered.


What is the first metal in the periodic table?

The first metal in the periodic table is lithium, with atomic number 3.


How did mendeleev arrange his version of the periodic table?

Mendeleev arranged his version of the Periodic Table in terms of ascending atomic weights and similar properties. Since it was first published in 1869, there have been updates and improvements.


What trends were first used to classify the elements?

The first trends used to classify elements were atomic mass and chemical properties. The periodic table was originally arranged based on increasing atomic mass, where elements with similar chemical properties were grouped together. This led to the discovery of periodic patterns, eventually resulting in the modern periodic table organized by atomic number.


When did Dmitri mendeleev organize the periodic table?

he first organized his table in 1869 he did it by organizing them by atomic weights.


What element is the first on the periodic table?

Hydrogen is the first element on periodic table. Its atomic number is 1.