Answer the questions in the table below about the shape of the borane (BH3) molecule. How many electron groups are around the central boron atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central boron atom? (You may need to use the scrollbar to see all the choices.) 1 (choose one)

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Answer the questions in the table below about the shape of the sulfur trioxide (SO3) molecule. How many electron groups are around the central sulfur atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central sulfur atom? (You may need to use the scrollbar to see all the choices.) 0 (choose one) X Ś

For each compound in the table below, decide whether there would be any hydrogen-bonding force between molecules of the compound, or between molecules of the compound and molecules of water. compound hydrogen-bonding force Between Between molecules of formula or Lewis molecules of the the compound and molecules of water? name structure compound? :0: || Н — С — о— Н yes yes formic acid no no yes О yes iodomethane CH,I no no H H yes yes dimethyl ether Н — С — - C -H no no H H O O ОО :o:

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The table below includes the bond enthalpy (the energy required to separate the diatomic molecule into its atoms) and the bond length for each diatomic molecule. Diatomic Molecule Bond Enthalpy (kJ/mol) Bond Length (pm) Cl2 243 199 O2 498 121 N2 945 110   Identify the observed trend between bond enthalpy and number of shared electrons: as the number of electrons shared between two atoms increases, the bond enthalpy (  increases  /  decreases  /  remains unchanged  ).   Identify the observed trend between bond length and number of shared electrons: as the number of electrons shared between two atoms increases, the bond length (  increases  /  decreases  /  remains unchanged  ).

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Answer the questions in the table below about the shape of the nitrosyl choride (NOC1) molecule. How many electron groups are around the central nitrogen atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central nitrogen atom? (You may need to use the scrollbar to see all the choices.) 0 (choose one) X

What is the total number of single bonds, double bonds, and triple bonds in the best Lewis structure o C2H2? O 3 single, 0 double, 0 triple O 2 single, 0 double, 1 triple O 2 single, 1 double, 0 triple O O single, 2 double, 1 triple O1 single, 2 double, 0 triple

please draw a lewis structure, determine the # of electron groups around the central atom, and determine the geometry of the molecule. (please state both the name of the geometry and draw the molecular shape) molecule lewis structure electron pair geometry around the central atom(s) molecular shape around the central atom(s) CO2       H2S       H2O2       NF3       SO2Cl2       NO2       C2H2       C2H4       C2H6