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3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Which of the following order is CORRECT
  • A
    $VO_2^+ < Cr_2O_7^{-2} < MnO_4^-$ (Oxidation state of central atom )
  • ✓
    $BeSO_4 < MgSO_4 < BaSO_4$ (Solubility)
  • C
    $NaHCO_3 > KHCO_3 > RbHCO_3$ (Thermal stability)
  • D
    $BeCl_2 > MgCl_2 > CaCl_2$ (Melting point)
✓

Answer

Correct option: B.
$BeSO_4 < MgSO_4 < BaSO_4$ (Solubility)
b
$\xrightarrow{{Te{O_2},\,Se{O_2},\,S{O_2}}}Acidic$

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