Inorganic Chemistry

X_M =Electronegativity of an element ; IE = Ionization Energy ; EA =Electron Affinity 

λ= Wavelength of the emmited light (electromagnetic rediation) in the vacuum ; R = Rydberg Constant (1.097x 10⁷ m^-1) ; Z = Number of proton in the nucleus of the element; n_f = Principal quantum number of final state; n_i = Principal quantum number of the initial state 

Z = Effective nuclear charge; Z = Atomic Number ; σ = Shielding

λ = Radioactive Decay Constant or Disintegration Constant; t = Time interval for which radioelement is present ;  

n₀ = Initial number of atoms ; n= Final number of atoms.

t_1/2 = Half Life of Radioactive elment; λ = Decay Constant of the radioactive element

t_1/2 = Half-life of the isotope; T = Time taken for the specific decay ; W_ini = Initial amount of the radioactive isotope; W_fin = Final amount of the radioactive isotope

d= Interplanar Spacing ; h , k , l = Miller Indices; a ,c = Lattice Constants

d_hkl= Lattice Spacing ; a = Lattice Constant ; h , k , l = Miller Indices;

n = An integer ;   λ = Wavelength of the incident light ; d_hkl= Lattice Spacing ; θ = Angle of incidence ;