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Part A. Identify each of the following compounds as ionic, covalent or acidic .

ID: 999796 • Letter: P

Question

Part A. Identify each of the following compounds as ionic, covalent or acidic. Circle the correct answer(s) only.

i)              Cr2O3                    ionic      or            covalent                 or            acid

ii)             NH4CN                  ionic      or            covalent                or            acid

iii)            MnCO3                    ionic     or              covalent                or            acid

iv)            CS2                         ionic      or            covalent                 or            acid

v)             HF                         ionic      or             covalent                or            acid

vi)            AlPO4                      ionic      or             covalent                or            acid

vii)           P2O5                      ionic      or             covalent                 or            acid

viii)          H2SO3 (aq)              ionic      or            covalent                or            acid

ix)            Pb(NO2)4                ionic      or             covalent                or            acid

x)             Cu2O                     ionic      or             covalent                 or            acid

xi)            Ba(H2PO4)2* 2H2O ionic      or              covalent                 or            acid

xii)           Rb2SO4                  ionic      or             covalent                 or            acid

xiii)          HF(aq)                    ionic      or             covalent                 or            acid

xiv)          HOBr(aq)               ionic      or             covalent                 or            acid

xv)           Br3O8                      ionic      or             covalent                 or            acid

Part B. Write down the chemical formula of only Type I ionic compounds (with cations that do not have variable stable

    charges) contained on the list found on Part A.

Part C. Write down the chemical formula of only Type II ionic compounds (with cations that have variable stable  

     charges) contained on the list found on Part A.

Explanation / Answer

1. ionic; greater electronegativity difference

2. ionic

3.covalent

4.covalent

5. acid

6. ionic

7. covalent

8. ionic as well as weak acid

9. ionic

10. covalent

11. covalent; hydrated metal salts formed covalent bond

12. ionic; form polyatomic ion

13. acidic

14. acidic but very weak

15. covalent; Br and O having almost same electronegativity