what is traid theory?

asked Jan 21, 2014 in Periodic Table by amrutha (157 points)
retagged Jan 31, 2014 by amrutha

1 Answer

answered Jan 21, 2014 by Bharani (222 points)

Traid theory was proposed by Dobarinar.According to the above theory the similar properties of elements arranged in the order of their atomic weights. The atomic weight of the middle elements is equal to the average weight of 1st and 3rd elements.

Eg:      Di      Na            k

            7       23           39=7+39/2=23(Na)

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