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Chemical Bonding and Molecular Structure

Term 161

  • Q3(a) [9]: What is co-ordinate bond? Write the electronic formulae of the following compounds: (i) CO; (ii) H₂O₂; (iii) BF₃; (iv) C₂H₂.
  • Q3(b) [5]: Explain the following: (i) Ice floats on water; (ii) Water exists as a liquid under the ordinary conditions while H₂S exists as gas under the same conditions.

Term 171

  • Q5(c) [5]: Show the hydrogen bonding in acetic acid molecules.
  • Q7(a) [8]: Write short notes on Noble gasses, Hydrogen bonding, Normality and pH of solutions, Diamagnetism and paramagnetism.

Term 181

  • Q3(c) [6]: Write the electronic formulae of the following compounds: (i) C₂H₆; (ii) BF₃; (iii) PCl₅; (iv) H₂O₂.
  • Q4(a) [4]: Define valance band, conduction band and forbidden band?
  • Q4(b) [4]: How many types of overlapping of covalent bond are seen?
  • Q4(c) [6]: Draw and explain the molecular orbitals of N₂ and O₂ according to MOT.

Term 201

  • Q3(b) [5]: Draw and explain the molecular orbitals of O₂ according to MOT.
  • Q3(c) [6]: Write the Lewis structure of the following molecules: (i) H₂O; (ii) NH₃; (iii) C₂H₂; (iv) BeCl₂; (v) CO₂; (vi) HF.
  • Q4(a) [4]: Compare the properties of ionic and covalent compounds.
  • Q4(b) [3x2]: Explain the following terms: (i) Hydrogen bonding; (ii) Metallic bonding; (iii) Water has maximum density at 4°C.

Term 211

  • Q3(a) [4]: How many types of overlapping of covalent bonds are seen?
  • Q3(b) [2+3]: Define co-ordination covalent bond. Show every type of bond available in NH₄Cl.
  • Q3(c) [5]: Draw and explain the molecular orbitals of O₂ according to MOT.