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    Chemistry A-Level

    Formation of halide ions by electron gain

    What Formation of halide ions by electron gain means in Chemistry A-Level, as defined for OCR.

    Definition of Formation of halide ions by electron gain

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    Reference: OCR

    In many redox reactions each halogen atom gains one electron, filling the p subshell to s²p⁶ and forming a halide ion with a single negative charge.
    OCR · The halogens

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