Question

write a short note on Newlands law of octaves.....


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at least 150 words...​

Answer 1

Explanation:

Newland's Law of Octaves states that when Elements are arranged by increasing Atomic Mass, the properties of every eighth Element starting from any Element are a repetition of the properties of the starting Element. Law of Octaves was true only for Elements up to Calcium.

Answer 2

• In 1866, John Newlands, an English scientist, arranged the then known 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. He compared this to the octaves found in music.

• Therefore, he called it the ‘Law of Octaves’. It is known as ‘Newlands’ Law of Octaves’.

• In Newlands’ Octaves, 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.