explain dobereiner's triads with example
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class 10th
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He found that the atomic mass of the middle element was approximately equal to the arithmetic mean (average) of the atomic masses of the other two elements of that triad when they are arranged in their increasing order of atomic mass, ... The atomic mass of Li is 9 and K is 39.
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yrr kha bu tum
Explanation:
aajo yrr yrrrr
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