Want this question answered?
The table of Newlands was only an incomplete precursor of the Mendeleev table.
it wasn't a real table
Because they were not discovered and were unknown when Newlands proposed his periodic table
Newlands and Dobereiner. Newlands did the Law of Octaves. Dobereiner did the Triads.
because inert gases were not discovered at that time..
The table of Newlands was only an incomplete precursor of the Mendeleev table.
John Newlands, in designing his table, believe that it was governed by the "Law of Octaves". While this is true for elements in what are now groups 2 and 3, it fails in period 4, when the periodicity becomes 18.
it wasn't a real table
Because they were not discovered and were unknown when Newlands proposed his periodic table
Newlands and Dobereiner. Newlands did the Law of Octaves. Dobereiner did the Triads.
Newland's Periodic Table was rejected because it had errors, for example he put iron and oxygen and sulfur in the same group even though iron is a metal and the other two are non-metals. This, along with the fact he put elements such as cobalt and nickel in the same box, made his table unacceptable.
62
because inert gases were not discovered at that time..
August 20, 1864 was when John Alexander Reina Newlands produced the first periodic table of the elements.
Lavoisier, Dobereiner, Newlands, Mendeleev, and Moseley
newlands arranged the elements in the periodic table in order of relative atomic massNewlands arranged elements in group of eight like musical notes.
Newland arranged all the then known elements into seven groups in his 'law of octaves'