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The s-block Elements — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThe s-block Elements1 Mark
MCQ
Passivity is exhibited by : $\text{(A)Be, (B)Mg, (C)Al, (D)B}$:
  • A
    $A, B$
  • B
    $B, C$
  • ✓
    $A, C$
  • D
    $B, D$
✓

Answer

Correct option: C.
$A, C$
Action of oxidizing agents such as conc. nitric acid forms a layer of an oxide on the surface of $Be$ and $Al$. Hence these metals become passive and do not react.

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