A computational extension of a theory whose name begins with this term relaxes the “strong orthogonality condition” from Coulson–Fischer theory. An initial assumption in a theory whose name begins with this term that precluded the “charge-shift” family led to the failure to explain the antiaromaticity of cyclobutadiene. That theory whose name begins (10[1])with this term arose from Walter Heitler and Fritz London’s solution to the Schrödinger equation for (10[1])diatomic (-5[2])hydrogen, which was then expanded upon in a 1939 textbook by Linus (10[1]-5[1])Pauling. The AXE (“A-X-E”) method is used in a formalism (10[1])beginning (10[1])with this term (10[1]-5[1])that assigns (10[1])labels (10[1])such (10[1])as “T-shaped” and (10[1])“seesaw.” (10[4]-5[5])For 10 (10[1])points, (10[4]-5[1])molecular (10[1]-5[2])geometries (10[3]-5[1])are described (10[1]-5[2])using (10[1])the (10[2])“electron pair repulsion” (10[2]-5[2])of what (10[1]-5[1])outermost (10[1])electrons (10[3])in an (10[1])atom? (10[3])■END■ (10[18]0[1])