Which statements correctly describe the significance of Moseley's law and characteristic X-rays?

Select all that apply

• Option A

  Characteristic X-ray frequency changes systematically with atomic number

• Option B

  Moseley's measurements provided experimental support for arranging elements according to atomic number

• Option C

  For a fixed characteristic series, √ν varies approximately linearly with Z

• Option D

  Moseley's law predicts the same Kα wavelength for every element