newlands octave rule and its limitations
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Newlands suggested that when the elements are arranged in the order of increasing atomic masses, the properties of every eight element are a repetition of that of the first element.
Limitations of law of octaves: The law of octaves has the following limitations ;
(A) The law of octaves was found to be applicable only upto calcium. It was not applicable to elements of higher atomic masses.
(B) Position of hydrogen along with fluorine and chlorine was not justified on the basis of chemical properties.
(C) Newlands placed two elements in the same slot to fit elements in the table. He also placed some unlike elements under the same slot. For example, cobalt and nickel are placed in the same slot and in the column of fluorine, chlorine and bromine.
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Newlands suggested that when the elements are arranged in the order of increasing atomic masses, the properties of every eight element are a repetition of that of the first element.
Limitations of law of octaves: The law of octaves has the following limitations ;
(A) The law of octaves was found to be applicable only upto calcium. It was not applicable to elements of higher atomic masses.
(B) Position of hydrogen along with fluorine and chlorine was not justified on the basis of chemical properties.
(C) Newlands placed two elements in the same slot to fit elements in the table. He also placed some unlike elements under the same slot. For example, cobalt and nickel are placed in the same slot and in the column of fluorine, chlorine and bromine.
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Heya!
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➡Newlands Octave Rule ⬅
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▪In 1865 , an English Chemist , John Newlands proposed a new system of grouping element's of similar properties.
◼◻According to Him ;
===================
When the elements are arranged in the increasing order of atomic masses , the properties of Every 8th element are similar to the first one . He called this relation " Law of Octaves " due to the similarity with music Scale .
This relationship is just like every 8th note resembles the first in octaves of music .
➡Limitations :
==============
➡It was applicable only up to Calcium ( Ca ) .
➡It couldn't accommodate the elements discovered in future as there were no gaps left in it .
➡In order to accommodate elements, he adjusted two elements in the same slot as well as he adjusted dissimilar elements in the same slot.
➡Position of Hydrogen wasn't justified .
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--------
-----------------------------------------------------------------------------------------------------
➡Newlands Octave Rule ⬅
-----------------------------------------------------------------------------------------------------
▪In 1865 , an English Chemist , John Newlands proposed a new system of grouping element's of similar properties.
◼◻According to Him ;
===================
When the elements are arranged in the increasing order of atomic masses , the properties of Every 8th element are similar to the first one . He called this relation " Law of Octaves " due to the similarity with music Scale .
This relationship is just like every 8th note resembles the first in octaves of music .
➡Limitations :
==============
➡It was applicable only up to Calcium ( Ca ) .
➡It couldn't accommodate the elements discovered in future as there were no gaps left in it .
➡In order to accommodate elements, he adjusted two elements in the same slot as well as he adjusted dissimilar elements in the same slot.
➡Position of Hydrogen wasn't justified .
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