MCQ
The law of triads is applicable to a group of
  • $Cl, Br, I$
  • B
    $C, N, O$
  • C
    $Na, K, Rb$
  • D
    $H, O, N$

Answer

Correct option: A.
$Cl, Br, I$
a
According to the law of triads the atomic $wt$ of the middle element is arithmatic mean of $I$ and $III.$
At wt of $Br = \frac{At.\,wt\, of\, Cl + At\, wt\, of\, I}{2}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free