Allen and Sanderson independently developed two different methods for calculating  this property, the former utilizing the average energy of the valence electrons while the latter calculating the ratio of the actual charge denisty to the expected charge denisty extrapoloated from noble gas data.  
Allen and Sanderson independently developed two different methods for calculating  this property, the former utilizing the average energy of the valence electrons while the latter calculating the ratio of the actual charge denisty to the expected charge denisty extrapoloated from noble gas data.  It is often calculated by taking the arithmetic mean of (*) electron affinity and ionization energy according to the Mulliken scale, and this property increases moving right and up along the periodic table. For 10 points, name this atomic property proposed by Linus Pauling which measures the ability to attract electron density, exhibited highly in oxygen and fluorine.
Allen and Sanderson independently developed two different methods for calculating  this property, the former utilizing the average energy of the valence electrons while the latter calculating the ratio of the actual charge denisty to the expected charge denisty extrapoloated from noble gas data.  
{electronegativity}