[" 14.The "K_(alpha)" X-rays of aluminium "(Z=13)" and zinc "(Z=30)],[" have wavelengths "887pm" and "146" pm respectively.Use "],[" Moseley's law "sqrt(v)=a(Z-b)" to find the wavelength of the "],[K_(alpha)" -ray of iron "(Z=26)]

The k_alpha X-rays of aluminium (Z = 13 ) and zinc ( Z = 30) have wavelengths 887 pm and 146 pm respectively. Use Moseley's law sqrt v = a(Z - b) to find the wavelength of the K_alpha X-ray of iron (Z = 26).

The k_alpha X-rays of aluminium (Z = 13 ) and zinc ( Z = 30) have wavelengths 887 pm and 146 pm respectively. Use Moseley\'s law sqrt v = a(Z - b) to find the wavelength of the K_alpha X-ray of iron (Z = 26).

The k_alpha X-rays of aluminium (Z = 13 ) and zinc ( Z = 30) have wavelengths 887 pm and 146 pm respectively. Use Moseley\'s law sqrt v = a(Z - b) to find the wavelength of the K_alpha X-ray of iron (Z = 26).

The k_alpha X-rays of aluminium (Z = 13 ) and zinc ( Z = 30) have wavelengths 887 pm and 146 pm respectively. Use Moseley\'s law sqrt v = a(Z - b) to find the wavelength of the K_alpha X-ray of iron (Z = 26).

X-rays emitted from a copper target and a molybdenum target are found to contains a line of wavelength 22.85nm attributed to the K_(alpha) line of an impurity element. The K_(alpha) lines of a copper (Z=29) and molybdenum (Z=42) have wavelength 15.42nm and 7.12nm respectively. Using Moseley's law, gamma^(1//2)=a(Z-b) . Calculate the atomic number of the impurity element.

The wavelength of K_alpha and L_alpha X-rays of a meterial are 21*3 pm and 141 pm respectively. Find the wavelength of K_beta X-ray of the material.

The wavelength of K_alpha and L_alpha X-rays of a material are 21.3 pm and 141 pm respectively. Find the wavelength of K_beta X-ray of the material.

The wavelength of K_alpha and L_alpha X-rays of a material are 21.3 pm and 141 pm respectively. Find the wavelength of K_beta X-ray of the material.

The K_alpha and K_beta X-rays of molybdenum have wavelengths 0*71 A and 0*63 A respectively. Find the wavelength of L_alpha X-ray of molybdenum.

The K_alpha and K_beta X-rays of molybdenum have wavelengths 0*71 A and 0*63 A respectively. Find the wavelength of L_alpha X-ray of molybdenum.