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1. Three elements A, B and C with similar properties haveatomic masses X, Y and Zrespectively. The atomic massof Y is approximately equal tothe average mass of X and Z.What is such an arrangementcalled?1)TRIODE2)TRIAD3)TRIPLET4)TRIMEROUS |
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Answer» TriadsExplanation:DOBEREINERS' triads had elements such that the average of atomic MASSES of first and last elements is EQUAL to atomic mass of the MIDDLE element |
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