A free atom of iron emits `K_alpha` X-rays of energy 6*4 keV. Calculate the recoil kinetic energy of the atom. Mass of and iron atom `= 9*3 xx 10 ^(-26) kg`.

Calculate the spin - only magnetic moment of Fe [Atomic number of iron = 26].

An isolated hydrogen atom emits a photon of 10.2 eV . (i) Determine the momentum of photon emitted (ii) Calculate the recoil momentum of the atom (iii) Find the kinetic energy of the recoil atom [Mass of proton = m_(p) = 1.67 xx 10^(-27) kg ]

A certain element emits K_alpha X-ray of energy 3.69 keV. Use the data from the previous problem to identify the element.

A certain element emits K_alpha X-ray of energy 3*69 keV. Use the data from the previous problem to identify the element.

An isolated hydrogen atom emits a photon of 10.2 eV . (i) Determine the momentum of photon emitted (ii) Calculated the recoll momenium of the atom (ii) Find the kinetic energy of the recoll atom [Mass of proton = m_(0) = 1.67 xx 10^(-27) kg ]