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In a triad the atomic weight of the middle element is about:
ALess than both
BHalf way between
CTwice the first
DEqual to the last
Answer & Solution
Correct answer: B. Half way between
1. The three elements of a triad are listed by atomic weight.
2. The middle one sits about half way between the outer two.
3. Its properties fall in between theirs as well.
_Source: syllabus Chemistry Part I, Chapter 3, Classification of Elements and Periodicity in Properties._
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