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(i) Aluminium nitrate has the chemical formula Al(NO3)3. (ii) Calcium oxide has the chemical formula CaO. (iii) Ferric oxide has the chemical formula Fe2O3. Each formula balances the combining valencies of the constituent ions.

aluminium nitratecbse class 9 science exploration chapter 9 solutionschemical formulae for the following compoundsferric oxidehalf yearly exam question paper - atomic foundations of matterncert solutions - atomic foundations of matter
Virat
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Element X needs two electrons to complete its valence octet. Two X atoms share two electron pairs equally, establishing a double covalent bond to create a stable diatomic molecule with the structure X double bond X.

cbse class 9 science exploration chapter 9 solutionscertain other element y has two electrons in its second shellclass 9 science exploration chapter 9 atomic foundations of matter question answerelement x has six electrons in its outer shell and forms a diatomic moleculewhy would that be so