Henry A. Bent

Henry A. Bent (December 21, 1926 – January 3, 2015)^[1] was a professor of physical chemistry who studied molecular orbitals to develop atomic hybridization and valence bond theories.^[2] Bent's rule, which predicts the orbital hybridization of a central atom as a function of the electronegativities of the substituents attached to it, is named for him.

Henry A. Bent
Born	(1926-12-21)December 21, 1926 Cambridge, Massachusetts
Died	January 3, 2015(2015-01-03) (aged 88) Pittsburgh, Pennsylvania
Alma mater	University of California, Berkeley (Ph.D. 1952)
Awards	George C. Pimentel Award in Chemical Education (1980)
Scientific career
Institutions	University of Connecticut University of Minnesota (1958-69) North Carolina State University, Raleigh (1969-89) University of Pittsburgh (1989-92)

In thermodynamics he developed a global approach now known as "entropy analysis" for the entropy component of thermodynamic free energy in relation to the second law of thermodynamics and the spontaneity of various chemical processes.^[3]

Bent was also interested in the periodic laws of the elements and promoted the left-step periodic table based on orbital-filling rules.^[4]

References

1. "In memoriam: Professor Henry Albert Bent". College of Science and Engineering. University of Minnesota. 6 January 2015. Retrieved 30 March 2020.
2. Ainsworth, Susan J. (23 March 2015). "Henry A. Bent". Chemical and Engineering News. 93 (12): 44. Retrieved 29 March 2020.
3. Bindel, Thomas H. (2004). "Teaching Entropy Analysis in the First-Year High School Course and Beyond". J. Chem. Educ. 81 (11): 1585–1594. doi:10.1021/ed081p1585.
4. Schwartz, A. Truman (2007). "New Ideas in Chemistry from Fresh Energy for the Periodic Law (Henry A. Bent)". J. Chem. Educ. 84 (9): 1431–1432. doi:10.1021/ed084p1431.