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AP EAMCET20227 Jul 2022Evening ShiftChemistryThermodynamics (C)Actual

Bond enthalpy of Ge - Ge bond is 260 ~kJ ~mol ⁻¹ . The bond enthalpies of Si-Si and Sn - Sn bonds in kJ mol ⁻¹ are respectively

Options

  1. A240,270
  2. B297,297
  3. C297,240
  4. D200,348

Correct answer

C. 297,240

Step-by-step solution

The Si , Ge and Sn belong to third, fourth and fifth period of group 14 of periodic table. Moving down the group, size of atoms increases, so the bond length order is Si - Si 260>240 . ( kJ mol ⁻¹ ) aligned

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