Explain scientifically..? Chemistry help

Posted on 2015-08-31 12:28:00 in Chemistry by SYNUS

1. What is the valency of Al in Al2(SO4)3? Explain with reason?
2. What is the valency of chlorine and why?
3. Define ductility with its advantage.
4. Define Catenation?
5.Name one non metal that conducts heat and electricity?

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