The Spacing Between Atoms in KCl Crystal Is 3

question 3

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 2.23 × 10−¹¹-m x-rays be constructively scattered?

• A)30°
• B)2.1°
• C)0.11°
• D)20°
• E)​64°

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