What is the advantage of the dobereiner triads?

The only advantage of Dobereiner’s research was that it made chemists look at elements in terms of groups of elements with similar chemical and physical properties. This eventually led to rigorous classification of elements and the modern periodic table of elements, as we now know it, was discovered.

What were the disadvantages of dobereiner triads?

He was not able to prepare triads of all the known elements. All the known elements could not be arranged in the form of triads. For very low mass or for very high mass elements, the law was not holding good.

What is importance of dobereiner triads Class 10?

Dobereiner’s Triads: Dobereiner could identify only three triads from the elements known at that time. Dobereiner’s system of classification could not predict the existence of elements that were not yet discovered.

What is achievement of dobereiner’s law of triads?

Answer:The Achievements of dobereiner’s law of traids were:- Explanation: i)He was able to grouped three elements having similar chemical properties together. ii) The atomic mass of the middle element of the traid being equal to the average of the atomic mass of other two elements.

What is dobereiner’s triad give one example?

For example: Alkali metal group ( Dobereiner’s triad) : Lithium is the 1st element, sodium is the middle element whereas potassium is the 3 rd element of the triad.

What are the advantages and disadvantages of modern periodic table?

It is easy to remember and reproduce. The systematic grouping of elements into four blocks; s, p, d and f has made the study of the elements more simple. The position of some elements which were misfit on the basis of atomic mass is now justified on the basis of atomic number.

What were the limitations of the dobereiner’s classification?

Some of the limitations of Dobereiner’s classification were, Dobereiner could find only three triads; . i.e total of 9 elements only. The law was not holding good for elements having very high mass or very low mass. Not all groups obeyed the Law of Triads.

What are the characteristics of dobereiner triads?

characteristic of Dobereiner’s triads – In each triad, the elements were placed according to the increasing order of their atomic masses and, the atomic mass of the middle element in each triad was approximately equal to the mean of the atomic masses of the other two elements.

What is the main advantage of the periodic table?

ADVANTAGES OF THE PERIODIC TABLE: It is easier to remember the properties of an element if its position in the periodic table is known. The periodic table has made the study of chemistry systematic and easy. It acts as an aid to memory.

What are advantages of modern periodic table?

List some of the advantages of the modern periodic table….

• The table is based on a fundamental property i.e. atomic number of the elements.
• It correlates the position of the element with its electronic configuration clearly.
• The completion of each period is more logical.
• It is easy to remember and reproduce.