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The main defect is that after the discovery of noble gas like neon, argon. After it the similar elements doesn't reoccur at the interval of eighth like that of eighth note of rhythm but occur at the interval of ninth which is against law.(dahal.ramchandra@gmail.com)
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Who preceded Mendeleev and Meyer with work on the periodic table?
Newlands and Dobereiner. Newlands did the Law of Octaves. Dobereiner did the Triads.
How many groups did newlands periodic table have?
Newland arranged all the then known elements into seven groups in his 'law of octaves'
Why the law of octaves failed in classification of elements?
Newlands Law of Octaves has many limitations, which are discussed below.1. This law was not applicable throughout the arrangement. It was applicable only till calcium.2. Newlands assumed that only 56 elements would exist in nature and believed that no more elements would be discovered. However, several elements were discovered in the following years. These elements did not follow the Law of Octaves.3. The positions of cobalt and nickel could not be explained according to Newlands Law of Octaves. He kept cobalt and nickel in the same slot. They were also placed in the same column as fluorine and chlorine, which have completely different properties.4. The properties of iron are similar to those of cobalt and nickel. However, iron was placed away from them in a different column.
What are newland's law of octaves defect?
Newlands published the "law of octaves" twice. His first publication was not well regarded because it only included about 17 of the more than 60 elements known at the time. After receiving this reaction, he had a second attempt, trying to fit in all known elements. This was "laughed out of court" at a meeting of the Royal Society because: • the criteria for "chemical similarity" were not well defined nor consistent, leading to some quite bizarre groupings (a lot of obvious "force fitting"). • no allowance was made for possible new elements at a time when the rate of discovery of new elements was around 1 per year. • the law did not arise out of any plausible theoretical treatment. It was purely empirical.
Why Did John Alexander Reina Newlands Study science?
John Alexander Reina Newlands studied science because he had a passion for understanding the natural world and wanted to contribute to scientific knowledge. He specifically focused on chemistry and developed the law of octaves, which was a significant contribution to the periodic table and the classification of elements. His work helped lay the foundation for further advancements in the field of chemistry.
What is Newland's law of Octave?
what is newlands law of octaves
Which scientist proposed the law of octaves?
John Newlands A+
Who started the law of octaves?
by the English chemist J.A.R. Newlands in 1865
Who preceded Mendeleev and Meyer with work on the periodic table?
Newlands and Dobereiner. Newlands did the Law of Octaves. Dobereiner did the Triads.
Who arranged elements using the law of octaves?
John Newlands (England) in 1865.
Who developed the law of octaves?
Law of octaves was established by newland, before mandelleve. It states that : The properties of elements will repeat themselves after every 8th element. The series in which the elements were set was determined by newland. The law was not very successful because elements does not follow the same characteristics after mass no 40.
Why was the pattern that Newlands developed called the 'law of octaves'?
his tables contained gaps that elements with particular properties should fill.
Why was the pattern that newlands developed called the law of octaves?
his tables contained gaps that elements with particular properties should fill.
How many groups did newlands periodic table have?
Newland arranged all the then known elements into seven groups in his 'law of octaves'
Why the law of octaves failed in classification of elements?
Newlands Law of Octaves has many limitations, which are discussed below.1. This law was not applicable throughout the arrangement. It was applicable only till calcium.2. Newlands assumed that only 56 elements would exist in nature and believed that no more elements would be discovered. However, several elements were discovered in the following years. These elements did not follow the Law of Octaves.3. The positions of cobalt and nickel could not be explained according to Newlands Law of Octaves. He kept cobalt and nickel in the same slot. They were also placed in the same column as fluorine and chlorine, which have completely different properties.4. The properties of iron are similar to those of cobalt and nickel. However, iron was placed away from them in a different column.
What are john newlands triads?
John Dalton was the first person to begin ordering the elements. He did this according to atomic mass. John Newlands developed this idea further and noticed that there were similarities in ever eighth element, he called this "the law of octaves'. Newlands called each group (column) of three elements a 'triad'
Why was Newlands and periodic table rejected?
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.
