<p> Naming Covalent compounds</p><p>Covalent compounds are named using numeral prefixes. At this point we will only name binary covalent compounds (those w/ only 2 different elements). The prefixes are located on your polyatomic ions sheet.</p><p>Numeral prefixes 1- Mono 2-di 3-tri 4-tetra 5-penta 6-hexa 7-hepta 8-octa 9-nona 10-deca</p><p>The name of the first element remains unchanged. The suffix of the 2nd element changes to ide. The only time a numeral prefix is NOT used is when there is only one atom of the first element.</p><p>Eg 1. Name the following compounds a) H2O H has a prefix of 2 which is “di” so the first part of the name is dihyrogen O has 1 atom so has a prefix of “mon” & is the 2nd element so it ends in “ide” monoxide</p><p>The whole name is dihydrogen monoxide b) C2H6 C has 2 atoms so a prefix of “di”. The first part of the name is dicarbon H has 6 atoms so a prefix of “hexa” & is the 2nd element so ends in “ide” hexahydride</p><p>The whole name is dicarbon hexahydride.</p><p>Eg. 2. Write the name of the following compounds a) phosphorus tribromide Phosphorus has no prefix so there is only 1. Tri means there are 3 bromines. PBr3 b) disulfur pentachloride sulfur is “di” so has a 2 subscript, chloride is “penta” so has a 5 subscript S2Cl5 c) nitrogen monoxide Nitrogen is first & has no prefix so there is only 1. Mon on oxide also means a subcript of 1 NO</p><p>Additional help, examples & practice can be found in Chapter 2 of your AP Chemistry text by Zumdahl. Naming Covalent Compounds Worksheet</p><p>Write the formulas for the following covalent compounds:</p><p>1) antimony tribromide ______</p><p>2) hexaboron silicide ______</p><p>3) chlorine dioxide ______</p><p>4) hydrogen iodide ______</p><p>5) iodine pentafluoride ______</p><p>6) dinitrogen trioxide ______</p><p>7) ammonia ______</p><p>8) phosphorus triiodide ______</p><p>Write the names for the following covalent compounds:</p><p>9) P4S5 ______</p><p>10) O2 ______</p><p>11) SeF6 ______</p><p>12) Si2Br6 ______</p><p>13) SCl4 ______</p><p>14) CH4 ______</p><p>15) B2Si ______</p><p>16) NF3 ______Naming Covalent Compounds Solutions</p><p>Write the formulas for the following covalent compounds:</p><p>1) antimony tribromide SbBr3</p><p>2) hexaboron silicide B6Si</p><p>3) chlorine dioxide ClO2</p><p>4) hydrogen iodide HI</p><p>5) iodine pentafluoride IF5</p><p>6) dinitrogen trioxide N2O3</p><p>7) ammonia NH3</p><p>8) phosphorus triiodide PI3</p><p>Write the names for the following covalent compounds:</p><p>9) P4S5 tetraphosphorus pentasulfide</p><p>10) O2 oxygen</p><p>11) SeF6 selenium hexafluoride</p><p>12) Si2Br6 disilicon hexafluoride</p><p>13) SCl4 sulfur tetrachloride</p><p>14) CH4 carbon tetrahyrdidemethane</p><p>15) B2Si diboron silicide</p><p>16) NF3 nitrogen trifluoride</p>