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.
1 The elements in Na 2 O are a metal and a nonmetal, which form ionic bonds. 2  Because sodium is a metal and we recognize the formula for the phosphate ion (see Table 3.1 Some Polyatomic Ions), we know that this compound is ionic. However, polyatomic ions are held together by covalent bonds, so this compound contains both ionic and covalent bonds. 2  The elements in N 2 O 4 are both nonmetals, rather than a metal and a nonmetal. 3  Therefore, the atoms form covalent bonds.