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Dobereiner's Triads

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Question

According to Dobereiner's theory of triads, the mass of middle element was roughly the average of atomic masses of other two elements.

A

False

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B

True

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Solution

The correct option is B True

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Q. According to Dobereiner's theory of triads, the mass of middle element was roughly the average of atomic masses of other two elements.

Which scientist stated that the atomic mass of the middle element was roughly the average of the atomic masses of the other two elements?

Q. In Dobereiner's triads, when three elements in a triad are written in the increasing order of atomic masses; the atomic mass of the middle element is roughly the average of the atomic masses of the other two elements. Identify ‘X’ from the given triad.
Li (6.9), Na (X), K (39.0).

Q. Based on Dobereiner's theory of triads, match the following.
Element (atomic mass)

Q. In Dobereiner classification of elements, the atomic weight of the middle element is equal to the ________ of the extreme elements of a triad.

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Dobereiner's Triads

Standard XIII Chemistry

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