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Cambridge IGCSE Physics practice

Paper 3 structured question: The atom

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The atom

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Paper 3Theory (Core)1 marks

Ionic compounds are formed through the transfer of electrons between atoms.

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Formation of Ions

When sodium (Na) reacts with chlorine (Cl), sodium loses one electron to become Na+, and chlorine gains that electron to become Cl-.

  1. a

    State the charge of the sodium ion formed in this reaction.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: The atom

Paper 3Theory (Core)1 marks

Description

Ion Formation

Magnesium (Mg) can lose two electrons to form Mg2+, while oxygen (O) can gain two electrons to form O2-.

  1. a

    State the charge of the magnesium ion formed in this process.

    Aim for approximately 1 distinct marking point.

    [1]