please answer fastly for the five questions
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8. n=4 l=1, n=4 l=0, n=3 l=2, n=3 l=1
9.Na is larger
10. BF3 is odd one because it has sp2 hybridized while rest are sp3
11.hematite,magnetite
12.acetic acid +ethyl alcohol ==ethyl acetate +H2O
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