The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
From inside the book
Results 1-3 of 60
Page 83
... bonds should be 60 ° . This small angle imposes considerable strain on the molecule , however , because the normal angle between carbon - carbon bonds ( with the tetrahedral struc- ture ) is 109.5 ° . The molecule accommodates to this ...
... bonds should be 60 ° . This small angle imposes considerable strain on the molecule , however , because the normal angle between carbon - carbon bonds ( with the tetrahedral struc- ture ) is 109.5 ° . The molecule accommodates to this ...
Page 85
... bonds , has all four atoms ( carbon and the three atoms attached to it ) in a single plane , with three equal bond ... Bonds with this symmetry are referred to as σ ( sigma ) bonds . The second electron pair , in order that it not occupy ...
... bonds , has all four atoms ( carbon and the three atoms attached to it ) in a single plane , with three equal bond ... Bonds with this symmetry are referred to as σ ( sigma ) bonds . The second electron pair , in order that it not occupy ...
Page 88
... bonds , as , for example : Br2 HH CH , CH = CH2 CH , C - CH alkali heat CH , C = CH ( + 2HBr ) . Br Br Reactions ... bonds separated by single bonds occur in fungi and higher plants ; an example is the substance CH - C = C - C = C - C ...
... bonds , as , for example : Br2 HH CH , CH = CH2 CH , C - CH alkali heat CH , C = CH ( + 2HBr ) . Br Br Reactions ... bonds separated by single bonds occur in fungi and higher plants ; an example is the substance CH - C = C - C = C - C ...
Other editions - View all
Common terms and phrases
activity amount antigen appear atoms become body bonds called cause central centre century common contain continued cover crystals cultural determined direct early east economic effect evaporation example fall feet Figure flow force glaciers Hungary hydrogen icebergs important income increase India individual industry internal Italy knowledge known lakes land later less major mass material means measure melting ment method metres miles minerals molecules natural North occur ocean organic origin percent period philosophy political population position present pressure produced range reaction regions relatively remains response result rise river rocks social soil structure supply surface temperature theory tion types United University usually various western wind