Why Can't Chromium and Nickel Form a Miscible Solid Solution

question 17

Multiple Choice

Why can't chromium and nickel form a miscible solid solution over the entire composition range?

• A) The lever rule says that these two metals can't coexist in an alloy.
• B) The two metals crystallize into different cubic structures in their pure forms.
• C) The tetrahedral holes in the nickel crystal are not large enough to accommodate the chromium.
• D) The octahedral holes in the chromium crystal are not large enough to accommodate the nickel.
• E) Chromium atoms can only fit inside tetrahedral holes, which are not present in the structure of pure nickel.

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Definitions:

Water Pollution

The contamination of water bodies, such as lakes, rivers, oceans, and groundwater, caused by harmful substances introduced by human activities.

Eutrophication

A process where water bodies become enriched with nutrients, leading to excessive plant growth and oxygen depletion.

Aquatic Ecosystem

A water-based environment which includes both marine and freshwater habitats, supporting a diverse range of life forms.

Nutrient Concentrations

The quantities of essential chemical elements or compounds, like nitrogen and phosphorus, available in an environment, crucial for the growth of organisms.