Question

Explain newland law of Octave.

Answer 1

Answer:

•The attempt of Doberneir encouraged other chemist to correlate the properties of elements with atomic mass.

•The attempt of Doberneir encouraged other chemist to correlate the properties of elements with atomic mass.•In 1866, John newland and English scientist arranged the then known elements in the order of increasing atomic.

•The attempt of Doberneir encouraged other chemist to correlate the properties of elements with atomic mass.•In 1866, John newland and English scientist arranged the then known elements in the order of increasing atomic.•He started with the element having the lowest atomic mass and ended with Thorium which was the 56th element.

•The attempt of Doberneir encouraged other chemist to correlate the properties of elements with atomic mass.•In 1866, John newland and English scientist arranged the then known elements in the order of increasing atomic.•He started with the element having the lowest atomic mass and ended with Thorium which was the 56th element.•He found that every eight element had properties similar to that of first element.

•The attempt of Doberneir encouraged other chemist to correlate the properties of elements with atomic mass.•In 1866, John newland and English scientist arranged the then known elements in the order of increasing atomic.•He started with the element having the lowest atomic mass and ended with Thorium which was the 56th element.•He found that every eight element had properties similar to that of first element.•He compare this to the updates found in music therefore it is called law of octaves.

•The attempt of Doberneir encouraged other chemist to correlate the properties of elements with atomic mass.•In 1866, John newland and English scientist arranged the then known elements in the order of increasing atomic.•He started with the element having the lowest atomic mass and ended with Thorium which was the 56th element.•He found that every eight element had properties similar to that of first element.•He compare this to the updates found in music therefore it is called law of octaves.•In Newland's octave the properties of lithium and sodium were found to be same. Sodium is the eighth element after Lithium. Similarly beryllium and magnesium resemble each other.

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Answer 2

Answer:

John Newlands was an English scientist, who arranged the elements in the order of increasing atomic masses. He started with the element having the lowest atomic mass (hydrogen) and ended at thorium which was the 56th element. He found that every eighth element had properties similar to that of the first, like the octaves found in music. He called this the ‘Law of Octaves’. Thus the Newlands' law of octaves states that

'When elements are arranged in the order of increasing atomic masses, the properties of every eighth element are similar to that of the first' . For example, the properties of lithium and sodium were found to be the same. Sodium is the eighth element after lithium. Similarly, beryllium and magnesium resemble each other.

 

Newlands Law of Octaves has many limitations, which are discussed below.

• This law was not applicable throughout the arrangement. It was applicable only till calcium.

• 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.

• 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.

• The properties of iron are similar to those of cobalt and nickel. However, iron was placed away from them in a different  column.

Explanation: