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DP IB Chemistry: SL

Topic Questions

Home / IB / Chemistry: SL / DP / Topic Questions / 4. Chemical Bonding & Structure / 4.2 Resonance, Shapes & Giant Structures / Multiple Choice: Paper 1


4.2 Resonance, Shapes & Giant Structures

Question 1

Marks: 1

Hydrazine, N2H4, is a precursor for multiple pharmaceutical compounds. 

Which of the diagrams below illustrate the most likely structure and bond angle of hydrazine?

ma1_14-2_ib_sl_mcq_easy

    Choose your answer
      

    Question 2

    Marks: 1

    Two boron-containing species, boron trifluoride (BF3) and the borohydride ion (BH4-), have different molecular shapes. 

    What are the shapes around the boron atom in these molecules?

     

    boron trifluoride (BF3)

    borohydride ion (BH4)

    A

    pyramidal

    tetrahedral

    B

    pyramidal

    square planar

    C

    trigonal planar

    tetrahedral

    D

    trigonal planar

    square planar

      Choose your answer
        

      Question 3

      Marks: 1

      Graphite has a structure containing layers of carbon atoms in hexagonal rings.

      Why is graphite a good conductor of electricity?

      • It has delocalised ions which can move and carry charge

      • It has delocalised electrons which are mobile

      • There are only weak London forces between the layers

      • Each carbon atom in the layers has only three covalent bonds

      Choose your answer
        

      Question 4

      Marks: 1

      What is the correct bond angle in a trigonal planar molecule?

      • 107°

      • 120°

      • 180°

      • 109.5°

      Choose your answer
        

      Question 5

      Marks: 1

      Which of the following is correct?

       

      Shape of SF6 molecule

      Bond angle in SF6 molecule

      A

      Octahedral

      90°

      B

      Square planar

      90°

      C

      Trigonal bipyramidal

      120°

      D

      Tetrahedral

      109.5°

        Choose your answer
          

        Question 6

        Marks: 1

        Which statement about the physical properties of substances is correct?

        • Covalent structures always have high melting points

        • Metals only conduct electricity when solid

        • Metals always have high melting points 

        • Ionic substances conduct electricity when liquid 

        Choose your answer
          

        Question 7

        Marks: 1

        Which of the following statements about graphite is correct?

        • The bond angle in graphite is 109.5 o

        • There are only London forces between the layers of graphite

        • Graphite has a higher melting point than diamond

        • Graphite is soluble in water

        Choose your answer
          

        Question 8

        Marks: 1

        Which of the following is the correct resonance hybrid structure of the carbonate ion, CO32-?

        q8_14-2_ib_sl_easy_mcq

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          Question 9

          Marks: 1

          Which of the following is correct?

           

          Shape of CCl4 molecule

          Bond angle in CCl4 molecule

          A

          Octahedral

          90°

          B

          Square planar

          90°

          C

          Trigonal bipyramidal

          120°

          D

          Tetrahedral

          109.5°

            Choose your answer
              

            Question 10

            Marks: 1

            Which substance is described in the table below?

            Melting point

            Electrical Conductivity

            Solubility

            Very high

            Non-conductor

            Does not dissolve

            • Silicon dioxide

            • Buckminsterfullerene

            • Graphite

            • Sodium chloride 

            Choose your answer