The correct term corresponding to the given blank is to be stated. Although aluminum is a reactive metal, pure aluminium ordinarily does not corrode severely in air because a protective layer of ________ builds up on the metal’s surface. Concept Introduction: The deterioration of metal in the presence of air, moisture and chemical such as an acid is known as corrosion. It turns the colour of silver articles to black due to the formation of silver sulphide over their surface in the presence of air.

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Chapter 18, Problem 83AP

Interpretation Introduction

Interpretation:

The correct term corresponding to the given blank is to be stated.

Although aluminum is a reactive metal, pure aluminium ordinarily does not corrode severely in air because a protective layer of ________ builds up on the metal’s surface.

Concept Introduction:

The deterioration of metal in the presence of air, moisture and chemical such as an acid is known as corrosion. It turns the colour of silver articles to black due to the formation of silver sulphide over their surface in the presence of air.

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