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Cambridge IGCSE Chemistry practice

Paper 3 structured question: Arrangement of elements

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Arrangement of elements

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Paper 3Theory (Core)1 marks

Understanding ion formation in relation to group numbers.

Description

Group Number and Ion Charge

Elements in the periodic table are arranged in groups. Each group has specific characteristics regarding the charge of the ions they form. For example, Group 1 elements form +1 ions, while Group 2 elements form +2 ions.

  1. a

    State the charge of the ions formed by Group 1 elements.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Arrangement of elements

Paper 3Theory (Core)3 marks

Description

Group Number and Ion Charge

Group 2 elements lose two electrons to form ions. Group 15 elements gain three electrons to form ions.

  1. a

    Explain how the group number of an element relates to the charge of the ions it forms.

    Aim for approximately 3 distinct marking points.

    [3]