Question

Explain what is Newlands law of octave ? ( In 7- 8 lines )

Answer 1

NEWLANDS LAW OF OCTAVES :


According to newlands law of octaves, when elements are arranged in increasing order of their atomic masses . The properties of the eight element are a repetition of the properties of the first element.

Newlands divided the elements into horizontal rows. Each horizontal row had 7 elements.

For example :- let us take a row from newlands classification of elements. If we take the elements Li, Be, B, C, N,O, F and Na, lithium ( Li ) is the first element, and sodium is eight. It has been found that the properties of sodium are a repetition of the properties of lithium.

In short, Both lithium and sodium have similar chemical properties.

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Answer 2

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$\large\underline{Newlands\:Law\:of\:Octaves:-}$

✔️ In 1866, he arranged then known elements in order of increasing atomic masses.

✔️ He started with element having low atomic mass,hydrogen and ended up in the thorium which was the 56th element.

✔️ He found that every eight element had properties similar 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 “Newland’s Law of Octaves”.

Hope it helps you!!