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STD 11 -p-Block elements - I — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 -p-Block elements - I4 Marks
MCQ
Which metal is protected by a layer of its own oxide
  • ✓
    $Al$
  • B
    $Ag$
  • C
    $Au$
  • D
    $Fe$
✓

Answer

Correct option: A.
$Al$
a
Aluminium in air is ordinarily protected by a molecule-thin layer of its own oxide. This aluminium oxide layer serves as a protective barrier to the underlying aluminium itself and preventing chemical reactions with the metal.

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