O LevelChemistryCambridge (CIE)Exam Questions2. Atoms, Elements & Compounds2.2 Atomic Structure & the Periodic Table

Atomic Structure & the Periodic Table (Cambridge (CIE) O Level Chemistry): Exam Questions

Exam code: 5070

2 hours32 questions

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2.2 Atomic Structure & the Periodic Table

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1
1 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

    Choose your answer

    2
    1 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

    Choose your answer

    3
    1 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

    Choose your answer

    1
    1 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

      Choose your answer

      2
      1 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

      Choose your answer

      3
      1 mark

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

      • Beryllium

      • Carbon

      • Tin

      • Lead

      Choose your answer

      4
      1 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

        Choose your answer

        5
        1 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

          Choose your answer

          6
          1 mark

          Elements X and Y combine to form an ionic compound.

          Atoms of X have more protons than atoms of Y.

          Atoms of Y have more valence electrons than atoms of X.

          Which statement is correct?

          • Ions of X are negatively charged.

          • Atoms of X have more electron shells than atoms of Y.

          • X and Y are in the same period of the Periodic Table.

          • X and Y are in the same group of the Periodic Table.

          Choose your answer

          7
          1 mark

          The ion Q2+ has three complete shells of electrons.

          What is Q?

          • calcium

          • magnesium

          • oxygen

          • sulfur

          Choose your answer

          8
          1 mark

          Which diagram shows a mixture of noble gases?

          Four particle diagrams labelled A, B, C and D. A: Single white circles and pairs of touching black circles present; no white–black bonds. B: Some black–white pairs present; also separate black circles. C: Black–white pairs and groups of three particles (one black, two white) bonded together. D: Separate black and white circles only; no particles bonded.

          How did you do?

          9
          1 mark

          Two atoms, X and Y can be represented as shown

          straight X presubscript 3 presuperscript 7 space space space space space space space space space space space space space space straight Y presubscript 3 presuperscript 8

          Which statement is correct for both atoms?

          • They have the same chemical properties because they have the same number of neutrons.

          • They have the same chemical properties because they have the same number of electrons in their outer shell.

          • They have the same physical properties because they have the same number of electrons in their outer shell.

          • They have the same physical properties because they have the same number of protons.

          Choose your answer

          1
          1 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

          Choose your answer

          2
          1 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

            Choose your answer

            3
            1 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

              Choose your answer

              4
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              1 mark

              Copper has two naturally occurring isotopes, 63Cu and 65Cu. The relative abundance of 63Cu is 69%.

              What is the relative atomic mass of copper?

              • 63.6

              • 64.0

              • 64.4

              • 65.0

              Choose your answer