If the Interplanar Spacing of NaCl Is 2

question 12

Multiple Choice

If the interplanar spacing of NaCl is 2.814 × 10−¹⁰ m, what is the predicted angle at which X-rays of wavelength 0.140 nm will be diffracted in a first-order maximum?

• A) 31.3°
• B) 7.20°
• C) 20.5°
• D) 14.4°
• E) 29.8°

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