1. Tardigrade
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  3. Chemistry
  4. Which of the following set of elements cannot be a triad?

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Q. Which of the following set of elements cannot be a triad?

Classification of Elements and Periodicity in Properties

Solution:

$B, Al$ and $Ga$ are not a triad because the atomic weight of $Al$ is not equal to average atomic weight of $B$ and $Ga$