CHEM 1300 Lecture Notes - Lecture 14: Lone Pair, Foaming Agent, Nitrogen

• School: University of Manitoba
• Department: Chemistry
• Course: CHEM 1300
• Professor: Elena Smirnova

Document Summary

Review questions: a provisional lewis structure of hcn is :h-c:n: . A) 0 (you should be able to get the structure below) Resonance structures vary in how the electrons are distributed. Resonance structures have the same arrangement of atoms. Formally, a resonance structure is one of two or more lewis structures that are equivalent to one another. Every resonance structure is correct the actual structure is something in between called a resonance hybrid. Determine the lewis structure of dinitrogen oxide (nno), a gas used as an anaesthetic, a foaming agent and a propellant for whipped cream. Your turn: determine the lewis structure of s(cid:1008) structures of s(cid:1008) (cid:1006) . (cid:1006) . Lewis structures allow us to predict the connectivity of atoms. Sometimes they can allow us to predict/explain reactivity (e. g. , co). Le(cid:449)is stru(cid:272)tures don"t e(cid:454)plain all the properties/rea(cid:272)ti(cid:448)it(cid:455) (cid:449)e o(cid:271)ser(cid:448)e . We use valence shell electron pair repulsion (vsepr) theory to predict the arrangement of atoms in 3d space.