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9 March, 04:40

An element X belongs to 4th period and 17th group. Write the formula of the compound formed when it reacts with Y (atomic no.-13, mass no. 27.)

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  1. 9 March, 05:00
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    All element in group 17th have their oxidation number to be - 1 and for the other element its shell configuration should be 2,8,3 ... therefore its oxidation number should be + 3

    therefore the formular should be YX3
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