IGCSEChemistry: Co-ordinated Sciences (Double Award)CIEExam QuestionsAtoms, Elements & CompoundsAtomic Structure & the Periodic Table

Atomic Structure & the Periodic Table (CIE IGCSE Chemistry: Co-ordinated Sciences (Double Award))

Exam Questions

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Atomic Structure & the Periodic Table

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Atomic Structure & the Periodic Table

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11 mark

Which option correctly describes the relative charges and masses of the subatomic particles?

  Proton Neutron Electron Relative mass of proton
A +1 0 0 0.00054
B 0 +1 +1 1
C 0 +1 -1 0.00054
D +1 0 -1 1

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    21 mark

    The atomic number of element Q is 9 and its mass number is 19.

    In which group of the Periodic Table should element Q be placed?

    • Group 0

    • Group I

    • Group VII

    • Group II

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    31 mark

    The diagram shows the atomic structure of an element.

    q3-2-1-mcq-easy-cie-igcse-che

    Which element is it?

    • Carbon

    • Beryllium

    • Oxygen

    • Boron

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    41 mark

    The atomic structure of atoms Q, R, S and T are shown in the table.

    Atom Number of protons Number of neutrons Number of electrons
    Q 6 7 6
    R 7 7 7
    S 6 8 6
    T 8 8 8

    Which two atoms are isotopes?

    A Q and S
    B Q and T
    C R and T
    D R and S

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      51 mark

      Substances can be broadly classified into three categories which are elements, compounds and mixtures.

      Which of the following statements is correct?

      • Elements contain different atoms

      • Compounds consist of elements that are not chemically combined

      • Mixtures consist of elements that are chemically combined

      • A mixture can contain elements and compounds

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      11 mark

      The structure of four particles is described in the table.

      Particle Number of protons Number of neutrons Number of electrons
      Li 3 X 3
      Li+ 3 4 2
      F Y 10 9
      F- 9 10 Z

      What are the correct values for X, Y and Z?

        X Y Z
      A 4 7 9
      B 3 9 9
      C 4 9 10
      D 3 7 10

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        21 mark

        Element X contains 12 of each sub-atomic particle.

        What is the correct Group number for element X?

        • Group 0

        • Group I

        • Group VII

        • Group II

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        31 mark

        Element X contains 4 electrons in its outer shell and 125 neutrons in its nucleus. What is element X?

        • Beryllium

        • Carbon

        • Tin

        • Lead

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        41 mark

        Potassium fluoride is an ionic compound formed when one atom of potassium bonds with one atom of fluorine.

        Which row correctly describes the charge and electronic configuration of each ion in the compound?

          Potassium ion Fluorine ion
        A 1 -  2, 8, 8 1 + 2, 8
        B 1 + 2, 8, 8 1 - 2, 8
        C 1 + 2, 8, 8 ,1 1 - 2, 7
        D 1 - 2, 8, 8, 2 1 + 2, 6

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          51 mark

          A section of the Periodic Table is shown below.

          q5-2-1-mcq-easy-cie-igcse-chemistry

          The electronic structure of elements W, X, Y and Z are shown in the table.

            Electronic structure
          W 2, 1
          X 2, 4
          Y 2, 8, 2
          Z 2, 8

          Which elements have the correct electronic structure?

          A  W and X
          B  Y and Z
          C  W and Y
          D  X and Z

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            11 mark

            The X+ ion of element X has 16 electrons and a nucleon number of 37. 

            What is the correct Group number for element X?

            • VII

            • VIII

            • III

            • I

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            21 mark

            Which row of the table correctly describes the link between outer shell electrons, Group number and Period number?

              outer electrons same as group number same as period number same as
            A group number period number outer electrons
            B period number group number outer electrons
            C group number outer electrons number of electron shells
            D outer electrons group number number of electron shells

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              31 mark

              Extended tier only

              Which row correctly describes the number of outer shell electrons and properties of isotopes?

                Number of electrons Chemical properties
              A same same
              B same different
              C different same 
              D different different

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                41 mark

                A selenide ion has the following notation.

                Se presubscript 34 presuperscript 79 superscript 2 minus end superscript

                Which row correctly describes the subatomic particles in a selenide ion?

                  Protons Neutrons Electrons
                A 79 34 34
                B 34 45 34
                C 34 45 36
                D 45 34 32

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