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Find the atomic number for an atom that emits K α radiation with wavelength 4 λ , if K α wavelength emitted by an atom of atomic number Z = 11 is λ .

Options

  1. AZ = 6
  2. BZ = 4
  3. CZ = 11
  4. DZ = 44

Correct answer

A. Z = 6

Step-by-step solution

1 λ ∝ z-1 2 ∴ λ 1 λ 2 = z 2 - 1 2 z 1 - 1 2 1 4 = Z 2 - 1 1 1 - 1 2 Solving this, we get, Z 2 = 6

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