(8分)(1)共价键; VA族;(各1分) (2)Cl ->N 3->Al 3+(2分)
(3)Al(OH) 3+NaOH=NaAlO 2+2H 2O(2分)
(4)2Al(s)+3FeO(s)=Al 2O 3(s)+3Fe(s) ΔH= -775.7kJ·mol - 1(2分)
(8分)(1)共价键; VA族;(各1分) (2)Cl ->N 3->Al 3+(2分)
(3)Al(OH) 3+NaOH=NaAlO 2+2H 2O(2分)
(4)2Al(s)+3FeO(s)=Al 2O 3(s)+3Fe(s) ΔH= -775.7kJ·mol - 1(2分)