At the Family Tree DNA Conference in November, James Irvine and Maurice Gleeson both presented sessions on utilizing a combination of STR and SNP data and various tools in analyzing their individual projects. Mauriceâs presentation was titled âCombining SNPs, STRs and Genealogy to build a Surname Origins Tree.â.
SO4 (2-) is a sulfate anion, and it has sulfur-oxygen single bonds. These single bonds are shorter than normal sulfur-oxygen single bonds but longer than a sulfur-oxygen carbon bond. This phenomenon is called resonance. C) SF6 has entirely covalent sulfur-fluorine bonds and is octahedral.D) CaI2 is an ionic compound, with the calcium and iodide ions in a lattice structure.O4 (2-) is a sulfate anion, and it has sulfur-oxygen single bonds. These single bonds are shorter than normal sulfur-oxygen single bonds but longer than a sulfur-oxygen carbon bond. This phenomenon is called resonance. C) SF6 has entirely covalent sulfur-fluorine bonds and is octahedral.
The approximate bond angle is about 107 degree. For SF2, the sulphur atom is surrounded by four electron pairs but there are two bonding pairs and two lone pairs. Therefore, the shape of SF2 is ' V ' . The repulsive force between lone pair - lone pair is greater than between the lone pair - bond pair . Hence the bond angle is even smaller than 107. The approximate bond angle is about 104.5 degree. For BCl3, the boron atom is surrounded by three electron pairs and the three electron pairs are all bonding pairs. Therefore the shape of BCl3 is trigonal planar and the bond angle is 120 degree.