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KCET2025ChemistryClassification of Elements and Periodicity in Properties

Given below and the atomic masses of the elements: array |l|l|l|l|l|l|l|l|l|l| Element: & Li & Na & Cl & ~K & Ca & Br & Sr & I & Ba Atomic Mas ( g ~mol ⁻¹ ): & 7 & 23 & 35.5 & 39 & 40 & 80 & 88 & 127 & 137 array Which of the following doesn't form triad?

Options

  1. ABa , Sr , Ca
  2. BCl , Br , I
  3. CCl , K , Ca
  4. DLi , Na , K

Correct answer

C. Cl , K , Ca

Step-by-step solution

Elements in triad should have similar properties K , Ca are metals Cl is non metals

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