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DP IB Chemistry: SL

Topic Questions

Home / IB / Chemistry: SL / DP / Topic Questions / 2. Atomic Structure / 2.1 Atomic & Electronic Structure / Structured Questions: Paper 2


2.1 Atomic & Electronic Structure

Question 1a

Marks: 3
a)

Deduce the missing information using section 5 of the data booklet, and complete the following table.

Symbol Protons Neutrons Electrons
23Na      
32S2-      
86Sr2+      

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    Question 1b

    Marks: 2
    b)

    A sample of Rh contains the following isotopes. Calculate the relative atomic mass of Rh in the sample. Give your answer to 2 dp.

    Isotope % Abundance
    101Rh 85
    102Rh 15

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      Question 1c

      Marks: 2
      c)
      Deduce the number of protons, neutrons and electrons in an atom of 102Rh.
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        Question 1d

        Marks: 1
        d)
        Give the atomic symbol of an element which has more protons than neutrons. Use its most common isotope.
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          Question 2a

          Marks: 1

          The atomic mass of each element in the periodic table is based on the carbon-12 scale.

          a)
          Describe the composition of the nucleus of carbon-12.
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            Question 2b

            Marks: 1
            b)
            Carbon also exists as the isotope 14C. How does the composition of this isotope differ from that of carbon-12.
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              Key Concepts
              Isotopes: Basics

              Question 2c

              Marks: 1
              c)

              The relative abundance of isotopes in a sample of carbon is 94% 12C and 6% 14C.

              How would this information be obtained.

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                Question 2d

                Marks: 1
                d)
                Calculate the relative atomic mass of the carbon sample in part c)
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                  Question 3a

                  Marks: 1
                  a)
                  Describe what is meant by the term orbital.

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                    Key Concepts
                    Electron Orbitals

                    Question 3b

                    Marks: 2
                    b)
                    Draw the shapes of the s, px, py and pz orbitals.
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                      Key Concepts
                      The s & p Orbitals

                      Question 3c

                      Marks: 1
                      c)
                      State the maximum number of orbitals in the n = 4 energy level.
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                        Key Concepts
                        Electron Energy Levels

                        Question 3d

                        Marks: 2
                        d)
                        List the d, f, p and s orbitals in order of decreasing energies.

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                          Key Concepts
                          Electron Energy Levels

                          Question 4a

                          Marks: 2
                          a)
                          Write the full electronic configurations for the following species 

                          i)
                          K

                          ii)
                          Sr2+
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                            Question 4b

                            Marks: 2
                            b)
                            Write the condensed electronic configurations for the following species

                            i)
                            Na

                             

                            ii)
                            Al3+
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                              Question 4c

                              Marks: 2
                              c)

                              Complete the orbital diagrams of phosphorus and fluorine as shown in the diagram below.

                              2-1-ib-sl-sq-easy-q4c

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                                Key Concepts
                                Orbital diagrams

                                Question 4d

                                Marks: 2
                                d)
                                Give the number of each type of orbital in the first four energy levels.
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                                  Key Concepts
                                  Electron Orbitals

                                  Question 5a

                                  Marks: 3
                                  a)
                                  Using sections 1 and 3 of the data booklet describe how the following change in moving from the infrared region of the electromagnetic spectrum to the radio region of the electromagnetic spectrum.

                                  i)
                                  Wavelength

                                  ii)
                                  Frequency

                                  iii)
                                  Energy

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                                    Question 5b

                                    Marks: 3
                                    b)
                                    Describe the process occurring in an atom to produce a single line on an emission spectrum.
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                                      Key Concepts
                                      Emission Spectra

                                      Question 5c

                                      Marks: 2
                                      c)
                                      Distinguish between a continuous spectrum and a line spectrum.
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                                        Key Concepts
                                        Emission Spectra

                                        Question 5d

                                        Marks: 3
                                        d)
                                        Describe the emission spectrum of hydrogen. Outline how this spectrum is related to the energy levels in the hydrogen atom.
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                                          Key Concepts
                                          The hydrogen spectrum