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AP EAMCET201726 Apr 2017Morning ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

S + Conc. H ₂ SO ₄ X+Y Here X is a gas and Y is a liquid and both are triatomic molecules. The number of electron lone pairs present on the central atoms of X and Y are respectively.

Options

  1. A2, 1
  2. B1, 0
  3. C1, 2
  4. D2, 2

Correct answer

C. 1, 2

Step-by-step solution

S +2 H ₂ SO ₄ (conc.) 3 SO ₂+2 H ₂ O (X) (Y) As SO ₂ has one lone pair of electrons on central atom i.e., sulphur. And H ₂ O has two lone pair of electrons on the central atom i.e., oxygen.

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