Chemistry 1301A/B Lecture Notes - Lecture 5: Valence Bond Theory, Covalent Bond, Lone Pair

• School: Western University
• Department: Chemistry
• Course: Chemistry 1301A/B
• Professor: James Noel

Document Summary

Axe notation: axmen, where a is the central atom, x are atoms (or groups) that are chemically bonded to a and e denotes a non-bonding pair (also called a (cid:862)lone pair(cid:863)). It does(cid:374)"t (cid:373)atter if it"s a si(cid:374)gle (cid:271)o(cid:374)d, dou(cid:271)le (cid:271)o(cid:374)d, et(cid:272): m and n are the number of x"s a(cid:374)d e"s, respe(cid:272)ti(cid:448)el(cid:455). Trigonal bipyramidal (not all angles are exactly equal) Octahedral (there are only 6 corners, but if you were to put sides on it to make a solid shape there would be 8 sides) *what you should know about vsepr shapes for the exam: the relationship between the # of regions of electron density and the geometry (table. The bonds add together to give you the net dipole. It is the merger of two 1s orbitals. In ch4: c valence shell begins life as 2s2 2p2: but to for(cid:373) 4 (cid:271)o(cid:374)ds, these 4 ele(cid:272)tro(cid:374)s (cid:373)ust all u(cid:374)pair i(cid:374) preparatio(cid:374) for (cid:271)o(cid:374)di(cid:374)g, giving, 2s1 2px.