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The Law of Triads

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  • In a chemical triad, the three elements must have very similar chemical properties.
    True
  • The Law of Triads was proposed by a German chemist named Dmitri Mendeleev.
    False
  • Who proposed the Law of Triads?
    Johann Wolfgang Döbereiner
  • The Law of Triads states that the density of the middle element is the average of the other two elements
    False
  • The specific formula used in the lesson to calculate the middle element's atomic mass
    (Atomic Mass of Element #1 + Atomic Mass of Element #2 ) /2
  • The Law of Triads classifies elements into groups of?
    Three
  • Despite its limitations, the Law of Triads was considered a giant leap forward for chemical classification.
    True
  • The chemical term for the group of three elements with similar properties is?
    Triad
  • Döbereiner's work was the first time a scientist found a quantitative relationship between properties and atomic masses
    True
  • The Law of Triads was considered a perfect classification system for all elements known at the time
    False
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