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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.)

Sagot :

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