試題詳解

複選題
2. Which of the following statements related to chemical bonding is (are) correct? (AB) The hybrid orbital used by the N atom in urea. H₂NCONH₂. is sp³. (AC) H₂S has greater ionic character than H₂O. (AD) The bond enthalpies (kJ/mol) of C-H. C-C. C=C. C-Br. H-Br. and Br-Br are 412. 348. 612. 276. and 366. and 193. respectively. The heat released when ethane. CH₂=CH₂. reacts with HBr to produce CH₃CH₂Br is 58 kJ/mol. (AE) Highly clcctroncgative atoms have low ionization energies and high electron affinities. (BC) NO₂ is not a radical. (BD)The electronic configuration in the oxide ion in BaO is [He]2s²2p⁶.