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Q. 10. What is a Doboroinor's triads ? Explain​

Answer»

-Dobereiner law of Triads:-Dobereiner law of Triads STATES that, In a group of three elements ; the atomic weight and properties of the middle element is the arithmetic MEAN of atomic weights of the first and third elements.The work "triad" means "A group of three elements".This law mostly DEPENDS on the atomic weight of an elementExamples:-1) Li (Lithium) , Na(SODIUM) , K (Potassium).Atomic weight of Li = 7 a.m.uAtomic weight of Na = 23 a.m.uAtomic weight of K = 39 a.m.u⟶ 23 = (7 + 39) / 2⟶ 23 = 46/2⟶ 23 = 23Drawbacks of Dobereiner's triads:-Dobereiner couldn't explain his law for all the elements which were existed.Dissimilar elements (in their properties) were grouped in a triad.



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