Do you know Why Newlands proposed the law of octaves. Explain your answer in terms
of the modern strucutre of the atom.
Answers
Answer:
To make the study of a vast array of elements easier by classifying them into groups based on their properties.
Explanation:
Newlands was one of the first to detect a periodic pattern in the properties of the elements and anticipated later developments of the periodic law.
He stated that if the chemical elements are arranged according to increasing atomic weight, those with similar physical and chemical properties occur after each interval of seven elements.
The “law of octaves,” thus enunciated, was controversial at first but later was recognized as an important generalization in modern chemical theory.
The key shortcomings of Newland’s law of octaves are listed below.
- Several elements were fit into the same slots in Newland’s periodic classification. For example, cobalt and nickel were placed in the same slot.
- Elements with dissimilar properties were grouped together. For example, the halogens were grouped with some metals such as cobalt, nickel, and platinum.
- Newland’s law of octaves held true only for elements up to calcium. Elements with greater atomic masses could not be accommodated into octaves.
- The elements that were discovered later could not be fit into the octave pattern. Therefore, this method of classifying elements did not leave any room for the discovery of new elements.
Newland was into music. He discovered that every eighth element when arranged in increasing order of atomic masses had similar properties with the first element just like in music every eighth sound is repeated. So he named it as law of octaves. Although it could be followed only till Ca.
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