Is it a covalent bond, ionic bond or both? check my answers please?

1) NaCl ionic bond

Answer 1

1) Yes
2) Yes
3) Covalent
4) Yes (Although some persons would say both, CH3-Li+)
5) Yes
6) Ionic (Na+CH3O-, although that is a toughie)
7) Ionic

Answer 2

CF4 is covalent
CH3Li is both
HCO2Na is ionic and covalent

Carbon forms covalent,
elements from column 1,2, 17 are ionic

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