Upto which element, the Law of Octaves was found to be applicable (a) Oxygen (b) Calcium (c) Cobalt Potassium

• Soln:

Answer is (b) Calcium

Explanation:

Newland’s law of octaves was applicable to the elements with atomic mass up to 40 da which comes up to Calcium. After calcium every eighth element possess properties similar to that of the first.