write symbols /formula and valency of the element and radicals and derive chemical formula of the following :
1.aluminium oxide
2.magnesium chloride
3.zinc carbonate
4.zinc hydroxide
5.aluminum nitrate
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1. AL2O3
2.MGCL2
3.ZNCO3
4.ZNOH
5.AL3(NO3)2
2.MGCL2
3.ZNCO3
4.ZNOH
5.AL3(NO3)2
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