Chemistry 122 Oregon State UniversityWorksheet 3 Notes Dr. Richard NafshunChemistry 122 Oregon State UniversityWorksheet 3 Notes Dr. Richard Nafshun1. The nitrogen-oxygen bond order in the nitrate ion (NO3-) is:(A) 1.00.(B) 1.33.(C) 1.50.(D) 1.75.(E) 2.00.Bond order = 34locationsnumberbondsnumber2. A student proposes ::O::C::O:: as a Lewis Structure for carbon dioxide.Carbon has a formal charge of 0 and each oxygen has a formal charge of 0.3. The H-C-H bond angle in methane is ______. Is this polar?109.5º; non-polarThe H-C-H bond angle in monofluoromethane (CH3F) is ______. Is this polar?A little greater than 109.5º; polarThe H-O-H bond angle in water is ______. Is this polar?A little less than 109.5º (typically listed as 105º); polarThe H-N-H bond angle in ammonia (NH3) is ______. Is this polar?A little less than 109.5º (typically listed as 107º); polarThe H-S-H bond angle in hydrogen sulfide (H2S) is ______. Is this polar?A little less than 109.5º (same Lewis Dot Structure as water); polarThe H-P-H bond angle in phosphine (PH3) is ______. Is this polar?A little less than 109.5º (same Lewis Dot Structure as ammonia, NH3); polarThe H-B-H bond angle in BH3 is ______. Is this polar?120º; non-polarThe O-C-O bond angle in carbon dioxide (CO2) is ______. Is this polar?A little less than 180º; non-polarThe F-S-F bond angle in SF6 is ______. Is this polar?90º; non-polarThe H-C-H bond angle in ethene (C2H4) is ______. Is this polar?120º; non-polarNote that the carbon atoms are sp2 hybridized (one double bond and two single bonds).The H-C-H bond angle in ethyne (C2H2) is ______. Is this polar?180º; non-polarNote that the carbon atoms are sp hybridized (one triple bond and two single bonds).4. Identify each carbon is the molecule below as sp, sp2, or sp3.5. Consider C2H2. The molecule contains __3__ sigma bonds and __2__ pi bonds.6. Consider a carbon-hydrogen bond in methane. This bond may be described as:(A) the overlap of an sp3 hybridized orbital of the carbon atom with a 1s orbital of the hydrogen atom.(B) the overlap of an sp2 hybridized orbital of the carbon atom with a 1s orbital of the hydrogen atom.CCH3CH3CCH2CHCCH3CH3CH7. Show the molecular orbital diagram for the H2 molecule. What is the hydrogen-hydrogenbond order? How many unpaired electrons are present?For the H2 molecule, the hydrogen-hydrogen bond order is 1.0. How many unpaired electrons are present? None.Show the molecular orbital diagram for the He2 molecule. What is the helium-helium bond order? How many unpaired electrons are present? Are your results consistent with the observations of helium?For the He2 molecule, the He-He bond order is 0.0. Hey, no bond is expected to form, and we observe this! How many unpaired electrons are present? None.Show the molecular orbital diagram for the O2 molecule. What is the oxygen-oxygen bond order? How many unpaired electrons are present?For the O2 molecule, the oxygen-oxygen bond order is 2.0. Hey, Lewis Dot Structure predicts a "double bond", and we observe this! How many unpaired electrons are present? Two.Show the molecular orbital diagram for the O22- ion. What is the oxygen-oxygen bond order? How many unpaired electrons are present?For the O22- ion, the oxygen-oxygen bond order is 1.0. Hey, less than the bond order of 2.0 in the O2 molecule! How many unpaired electrons are present? None.Show the molecular orbital diagram for the F2 molecule. What is the fluorine-fluorine bond order? How many unpaired electrons are present? Is this result consistent with the Lewis Dot Structure of F2?Same as the O22- ion, the fluorine-fluorine bond order is 1.0. How many unpaired electrons are present?