Chemistry
Did Dobereiner's triads also exist in the columns of Newland's Octaves? Compare and find out.
Periodic Table
184 Likes
Answer
Yes, Dobereiner's triads also exist in the columns of Newland's octaves.
Example: Consider the elements lithium (Li), sodium (Na), and potassium (K) present in second column of Newland's classification of elements. If we start with lithium as the 1st element, then the 8th element from it is sodium, and according to Newlands' law of octaves, the properties of the 8th element, sodium should be similar to those of the 1st element, lithium.
Again, if we take sodium as the 1st element, then the 8th element from it is potassium, and according to Newland's law of octaves, the properties of the 8th element, potassium should be similar to those of the 1st element, sodium.
This means that according to Newland's law of octaves, the elements lithium, sodium, and potassium should have similar chemical properties. We also know that lithium, sodium, and potassium form a Dobereiner's triad having similar chemical properties. From this, we conclude that Dobereiner's triads also exist in the columns of Newland's Octaves.
Answered By
107 Likes
Related Questions
(a) A, B and C are the elements of a Dobereiner's triad. If the atomic mass of A is 7 and that of C is 39, what should be the atomic mass of B?
(b) Why were Dobereiner's triads discarded?
Explain 'Newland's law of Octaves'. Why was the law discarded?
Lithium, sodium and potassium elements were put in one group on the basis of their similar properties. What are those similar properties.
The elements calcium, strontium and barium were put in one group or family on the basis of their similar properties. What were those similar properties?