V₁ = Volume of the 1st solution , V₂ = Volume of the 2nd solution , S₁= Strength of the 1st solution, S₂= Strength of the 2nd solution

N=Normality of the Solution ; W_solute = Weight of the Solute ; V = Volume of the solution;

M_w = Molecular Weight of the Solute; n = Equivalence Factor (basicity of an acid or acidity of a base/Number of electron transfer per mole reaction)

M=Molarity of the Solution ; W_solute = Weight of the Solute ; V = Volume of the solution; M_w = Molecular Weight of the solute;

V_ini = Volume of the solution before dilution , V_fin = Volume the solution after dilution , S_ini= Initial strength of the solution after dilution, S_fin= Final strength of the solution after dilution

μ_eff = Magnetic Moment ; X_M = Molar Suseptibility ; T =Temperature ; B.M= Bohr Magneton

μ = Magnetic Moment ;  n = Number of unpaired electron;

X_A , X_B = Electronegativity of element A and B , such that X_A > X_B ; E_AA =Bond energy of the A-A bond; E_BB =Bond energy of the B-B bond;

E_AB =Bond energy of the A-B bond;

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