X and y are two elements having similar properties which obey Newland s law of octaves how many elements are there in between x and y
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Answer
★ Newlands law of octaves :
This law was put forward by John Newland in 1864. This law states that, when the elements are arranged in increasing order of their atomic masses, the properties of the eighth element are similar to that of the first element.
Example : The eight element from sodium is potassium. Hence, the properties of potassium are similar to that of sodium.
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We are given in the question that properties of element Y is similar to the properties of element X. Then, according to Newlands law of octaves, element Y should be the eighth element apperaing from element X.
Hence, the number of elements occuring between X & Y would be 6.
Example : Li (lithium) & Na (sodium) are two elements having similar chemical properties and the total number of elements occuring between them is 6 [Be(beryllium), B(boron), C(carbon), N(nitrogen), O(oxygen) & F(fluorine)]
Answer:
According to the law of octaves, those with similar physical and chemical properties occur after each interval of seven. Thus if X is the first element and Y is the eighth element, the number of elements in between X and Y is 6.