Chemistry - Atomic Structure Question with Solution | TestHub

The characteristic X-rays wavelength is related to atomic number by the relation

$\sqrt{\mathrm{\nu }}=\mathrm{a}\left(\mathrm{Z}-\mathrm{b}\right)$

When Z is the atomic number, a and b are Mosley's constants. If${\mathrm{\lambda }}_1=\mathrm{ }2.886\mathrm{ }\mathrm{Å}$and${\mathrm{\lambda }}_2=\mathrm{ }2.365\mathrm{ }\mathrm{Å}$corresponding to${\mathrm{Z}}_1=55$and${\mathrm{Z}}_2=60$respectively, the value of Z corresponding to$\mathrm{\lambda }=2.660\mathrm{ }\mathrm{Å}$is