H2 Chem question

• quailmaster

  22 Mar 10, 22:29

  Which feature is present in the ions carbonate, ethanoate, nitrate and phenoxide ?

  A) all bond angles are 120 degrees

  B) dative covalent bonds

  C) delocalised electrons

  D) hydrogen bonds

  Which option is the best ?

   

• UltimaOnline

  22 Mar 10, 22:45

  Originally posted by quailmaster:

  Which feature is present in the ions carbonate, ethanoate, nitrate and phenoxide ?

  A) all bond angles are 120 degrees

  B) dative covalent bonds

  C) delocalised electrons

  D) hydrogen bonds

  Which option is the best ?

   

  
  All of these ions have their negative charge stabilized from being delocalized by resonance. (My tuition students would be able to draw the resonance contributors for these anions. Understanding resonance is essential in understanding Chemistry, especially Organic Chemistry.)

• quailmaster

  22 Mar 10, 23:01

  I'm deciding b/w option A and C. The ans given is C but I think A is correct as well

• UltimaOnline

  22 Mar 10, 23:24

  Originally posted by quailmaster:

  I'm deciding b/w option A and C. The ans given is C but I think A is correct as well

  
  There is a sp3 hybridized C in CH3COO-.

• quailmaster

  22 Mar 10, 23:28

  i see. thanks :)