(WCSU24) We often use theory (valence bond, hybridization, r…

(WCSU24) We often use theory (valence bond, hybridization, resonance, etc.) to explain experimental data. When resonance (delocalized pi bonding) is present in a structure, what you see is not always what you get.  In the structure shown, the bond angles about nitrogen are 120 degrees.     Based on this information, give the following information: a. Molecular geometry about the nitrogen atom: [blank1] b. Hybridization of the nitrogen atom: [blank2] c. Name type of orbital holds the lone pair: [blank3]

(WCSU24) Each of the following transitions is from a differe…

(WCSU24) Each of the following transitions is from a different series (i.e. Balmer, Lyman, etc.) of emission lines from the hydrogen atom. NO CALCULATIONS ARE NECESSARY!  🙂 a.   n = 10 to n = 5 b.   n = 5 to n = 2 c.   n = 3 to n = 2 d.   n = 2 to n = 1   i.  Which transition will be the smallest change in energy?  [drop1] ii.  Which transition will have the shortest wavelength?  [drop2]

(WCSU24) Shown below are five curves that represent the dist…

(WCSU24) Shown below are five curves that represent the distribution of molecular speeds of five different gases at the same temperature and pressure, each in a separate 10 L container. The gases are H2, CH4, He, SF6, and N2. Complete the statements so that they are true.   a. The gas represented by [drop1] has the largest fraction of molecules traveling at the most probable speed. b. Curve [drop2] corresponds to N2. c.  All of the gases represented have the same [drop3]. d.  Gas [drop4] has the greatest density. e.  Increasing the speed of the molecules will [drop5] the pressure.

(WCSU24) Arrange the following in order of increasing…….

(WCSU24) Arrange the following in order of increasing….         smallest/lowest –> largest/highest Example:  Radius Cs Rb Li Li             Rb           Cs Atomic radius P Mg F [drop1] < [drop2] < [drop3] Bond strength C=C C-C C≡C [drop4] < [drop5] < [drop6] Melting point NaCl CH4 H2O [drop7] < [drop8] < [drop9] Ionization energy Cl P Na [drop10] < [drop11] < [drop12] Bond angle HCN NH3 H2O [drop13] < [drop14] < [drop15] Bond polarity C-F C-N C-H [drop22] < [drop23] < [drop24] Energy 3s 2s 3p [drop16] < [drop17] < [drop18] Energy UV light X-rays micro waves [drop19] < [drop20] < [drop21]