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Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryClassification of Elements and Periodicity in Properties1 Mark
MCQ
Which pair is different from the others?
  • A
    Li − Mg
  • B
    Na − K
  • C
    Ca − Mg
  • D
    B − Al
✓

Answer

  1. Li − Mg

Explanation:

Li − Mg have a diagonal relationship between them i.e. they show various similar properties. 

Whereas Na − K belongs to Group - 1, Ca − Mg belongs to Group - 2 while B − Al belongs to Group - 13.

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