Which of the Following Statements Concerning the Cubic Unit Cell $\circ$

question 22

Multiple Choice

Which of the following statements concerning the cubic unit cell is/are CORRECT?
1) For cubic unit cells,three cell symmetries occur: primitive cubic,face-centered cubic,and body-centered cubic.
2) The cell edges of a cubic unit cell are all equal in length.
3) The corner angles of a cubic cell are 90 ^$\circ$ .

• A) 1 only
• B) 2 only
• C) 3 only
• D) 2 and 3
• E) 1,2,and 3

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