MCQ
Aluminium is a self-preserving metal, because
- AIt is not tarnished by air
- BA thin film of basic carbonate on its surface
- ✓A non-porous layer of oxide is formed on its surface
- DIt is not affected by salt water
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| List$-I$ | List$-II$ |
| $(I)$ $XeF_4$ | $(A)$ See-saw |
| $(II)$ $I_3^-$ | $(B)$ Tetra hedral |
| $(III)$ $XeO_2F_2$ | $(C)$ Bond angle $90^o$ |
| $(IV)$ $SO_4^{2-}$ | $(D)$ Linear |