Question:
Which of the following transition elements has both bcc and ccp structures at normal temperature?
Which of the following transition elements has both bcc and ccp structures at normal temperature?
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Some transition metals exhibit allotropic forms at different temperatures, meaning their crystal structure can change with temperature, as seen with manganese.
Updated On: Apr 30, 2025
- Titanium
- Vanadium
- Silver
- Chromium
- Manganese
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Solution and Explanation
The structure of transition metals at normal temperature can vary based on temperature. The crystal structure of an element refers to the arrangement of atoms within the solid.
- Titanium (A): Titanium has a hcp (hexagonal close-packed) structure at room temperature.
- Vanadium (B): Vanadium has a bcc (body-centered cubic) structure at room temperature.
- Silver (C): Silver has a ccp (cubic close-packed) structure.
- Chromium (D): Chromium has a bcc structure at room temperature.
- Manganese (E): Manganese is unique in that it exhibits both bcc and ccp structures at different temperatures. At lower temperatures, it adopts a bcc structure, and at higher temperatures, it adopts a ccp structure.
Thus, the correct answer is (E) Manganese, which has both bcc and ccp structures at normal temperature.
- Titanium (A): Titanium has a hcp (hexagonal close-packed) structure at room temperature.
- Vanadium (B): Vanadium has a bcc (body-centered cubic) structure at room temperature.
- Silver (C): Silver has a ccp (cubic close-packed) structure.
- Chromium (D): Chromium has a bcc structure at room temperature.
- Manganese (E): Manganese is unique in that it exhibits both bcc and ccp structures at different temperatures. At lower temperatures, it adopts a bcc structure, and at higher temperatures, it adopts a ccp structure.
Thus, the correct answer is (E) Manganese, which has both bcc and ccp structures at normal temperature.
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