The wavelength of the k_a line for an element of atomic number 43 is . Then the wavelength of the K_ line for an element of atomic number 29 is

Step-by-step solution

As, V =a(Z-b) aligned V & =a(Z-1) V & =a^2(Z-1)^2 C & =a^2(Z-1)^2 & = c a^2(Z-1)^2 aligned z=43 , wavelength = aligned & = c a^2(43-1)^2 & = c a^2 42 aligned for z=29 , wavelength = ^ aligned & ^ = C a^2(29-1)^2 & ^ = c 28 a^2 & ^ =- ( 42 28 )^2= ( 3 2 )^2 & ^ = ( 9 4 ) aligned