The Spacing Between Atoms in KCl Crystal Is 3

question 68

Multiple Choice

The spacing between atoms in KCl crystal is 3.1 × 10−¹⁰ m.At what angle from the surface will a beam of 3.57 × 10−¹¹-m x-rays be constructively scattered?

• A) 30°
• B) 3.3°
• C) 0.18°
• D) 33°
• E) ​103°

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