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p-Block Elements - I
easy
Which metal is protected by a layer of its own oxide
A
$Al$
B
$Ag$
C
$Au$
D
$Fe$
Solution
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.
Standard 11
Chemistry
