Question

According to the assumption of Newlands, what is the total number of elements in nature?

Answer 1

Hint: Newland made only 56 blocks while writing or arranging the elements. He might have assumed that many elements are present in nature.

Complete step by step answer:
- There were various attempts that were made in order to arrange the then known elements in a proper manner. The earliest attempt was made by Dobereiner and Newlands. They both gave their laws or statements in order to arrange the then known elements. Newland law was given by the scientist John Newlands.
- At that time only 62 elements were known, he arranged these elements on the basis of their atomic masses. When he arranged the elements in order of their atomic masses he observed that every eighth element has the same property. The similar properties get repeated after every 8 elements and hence the law is named as Newlands law of octave.
- Then known elements arranged according to increasing atomic masses as hydrogen, lithium, beryllium, boron, carbon, nitrogen, Oxygen, fluorine, sodium, magnesium, aluminium, silicon, Phosphorus, Sulphur and chlorine.
- According to this we can see that lithium has similar properties with sodium which is the eighth element with respect to lithium. In the same way the properties of beryllium will match with magnesium, the properties of boron will match with aluminium, the properties of carbon will match with silicone, the properties of nitrogen will match with phosphorus, the properties of Oxygen will match with Sulphur and the properties of fluorine will match with chlorine.
- He took the idea from the 8 notes of music where the every eighth note is similar to the first note.

Note:
There are some limitations of Newlands law of octave, elements with dissimilar properties were grouped together also the elements discovered later could not fit into the octave laws or the pattern.