Question

Identify the letter of choice that best completes the statement or answers the question. PLEASE ANSWER ALL! Thank you!

Part I. Multiple Choice Identify the letter of the choice that best completes the statement or answers the question (2 points each). 1. Which atomic orbitals overlap to form the carbon-carbon o bond and bond of ethylene, HC-CH2? a. o: sp + sp, and sp?+ sp c. 0:sp+ sp, and spi+sp? b. o: sp + sp, and p+p d. o: sp+sp', and .p+p 2. What is the formal charge on the N-atom in nitromethane, CH NO., in the most important resonance forms of this molecule? c. -1 b. -2 d. +2 3. Which of the following does not represent a pair of resonance structures? a. 1 c. 3 d. 4 b. 2 4. In the group of compounds below, which can function as Lewis bases? A B C D E F a. b. c. d. A and B A, B and F A, B and E B, D and E

Answer 1

Answer In ethylene, both c atoms are spa hybridized and contain one unhybridized ap orbital. sp2 hybridized orbitals of both e atoms perforon head to tail overlap to form a (c-c) o bond ap orbitals or both a atoms perform side on overlap. to form a (c = c) * bond. abond Biolo 000 2060 bond option (6) is correct ③ Important resonance form: 0 Jeu 2008 o CH₂ - TI are most important resonance forms as they have lesser charge separation than (I). so formal charge on N in nitro methane in it's most important resonance forms is +1. option (a) is correct 6 pair of resonance structures arise due to delocalization of t-bond and unshared electrons through carbon skeleton. OH tautomerization he-C=NH - Hal- NH2 Here one of t from tautomere two structure arise due to shifting place to another and they are called option (c) is correct

energetically available donated to an electron 6 A lewis base should contain unshared electrons that can be deficient species. - CH₂OH₂ CH₃OH + HO DOH + HS option (6) is correct