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What is dobereiner's triad

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What is dobereiner's triad
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Manoj Sharma 8 years, 1 month ago

According to dobereiner's traid:when the elements are arranged in the increasing atomic masses then the group of three elements (known as traid) with similar chemical properties are obtained.The atomic mass of the middle element is equal to the arithmetic mean of atomic masses of the other two elements.
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