How did john newlands discover the periodic table?

Answer 1

John Newlands was actually the first person to make a periodic table. He devised a Periodic Table arranged according to elements' atomic weights. He also arranged the elements into seven different groups. Newlands compared these groups to octaves in music.

Answer 2

John Alexander Reina Newlands (26 November 1837 - 29 July 1898) was an English chemist who pioneered the discovery of the Periodic Table.

Newlands was born in London and was the son of a scottish Presbyterian minister and his Italian wife.[1] He was home schooled by his father rather than going to a normal school studied and went on to study at the Royal College of Chemistry but was also interested in social reform, and in 1860, he served as a volunteer with Giuseppe Garibaldi in his campaign to unify Italy. Returning to London, he set up in practice as an analytical chemist in 1864, and in 1868 became chief chemist in James Duncan's London sugar refinery, where he introduced a number of improvements in processing. Later he left the refinery and again set up as an analyst with his brother Benjamin.

Answer 3

John Newlands did not discover the periodic table

-- the periodic table was not "out there" to be discovered. It did not exist until Mendeleev published a form of it in 1869.

-- John Newlands devised a classification scheme for the elements in 1863-65, which he called the "law of octaves". The basis for the classification was quite similar to the "periodic law" which led to Mendeleev's classification scheme.

-- In his 1863 scheme John Newlands successfully arranged about 20 elements, roughly one third of the then known elements, into families, on the basis of atomic weight. Every seventh element had generally similar chemical properties.

--Possibly responding to criticism about the relatively small number of elements in the arrangement, he prepared a similar scheme with all of the then known elements included for an 1865 presentation to the London Chemical Society.

-- This was, in effect, "laughed out of court" by the leading British chemists of the day because (i) Some of the family relationships in his scheme were rather ludicrous (ii) he had (unfortunately) suggested a parallel with the 7-note musical scale, which they saw as ridiculous (iii) he had left no gaps to accommodate new elements at a time when new elements were being discovered at a rate of approx. one each two years.

Answer 4

John Newlands was an English chemist who in 1865 classified the 56 elements that had been discovered at the time into eleven groups which were based on similar physical properties.

Newlands noted that many pairs of similar elements existed which differed by some multiple of eight in mass number. However, his law of octaves, likening this periodicity of eights to the musical scale, was ridiculed by his contemporaries. It was not until the following century, with Gilbert N. Lewis' valence bond theory (1916) and Irving Langmuir's octet theory of chemical bonding (1919) that the importance of the periodicity of eight would be accepted.

Answer 5

he arranged it in the relative Atomic Mass order

Answer 6

Newland gave the law of octaves. According to him, the properties of the elements are repeated in the same pattern as in octaves of music.

Answer 7

Newland gave 'Law of Octaves'.According to his model, the properties of elements are repeated like every 8th note that resembles 1st in octaves of music.

Answer 8

John Newlands was only a precursor of the periodic table of Mendeleev.

Answer 9

what order they went in

Answer 10

i didnt knew the answer