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first answer.....the element is Al with atomic no. 13 n valency 3.
second answer is Br with 7 valence electrons. It belongs to the family of Halogens.
When it combines with Y the compound formed is YX3 ( generalised formula). Actual formula is AlBr3
second answer is Br with 7 valence electrons. It belongs to the family of Halogens.
When it combines with Y the compound formed is YX3 ( generalised formula). Actual formula is AlBr3
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