molecule is best described as\nbeing identical to the resonance structure with the fewest bonds.\nrapidly…

molecule is best described as\nbeing identical to the resonance structure with the fewest bonds.\nrapidly switching between the different resonance forms.\na hybrid or average of all the contributing resonance structures.\nbeing identical to the resonance structure with the most double bonds.\nwhen drawing the lewis structure for a polyatomic ion, why is it necessary to add or subtract electrons from the total number of valence electrons?\nto account for differences in electronegativity between the atoms.\nto indicate the presence of coordinate covalent bonds.\nto satisfy the octet rule for all atoms in the ion.\nto reflect the overall charge of the ion.\nsend me a copy of my responses\nsubmit\nclear form

molecule is best described as\nbeing identical to the resonance structure with the fewest bonds.\nrapidly switching between the different resonance forms.\na hybrid or average of all the contributing resonance structures.\nbeing identical to the resonance structure with the most double bonds.\nwhen drawing the lewis structure for a polyatomic ion, why is it necessary to add or subtract electrons from the total number of valence electrons?\nto account for differences in electronegativity between the atoms.\nto indicate the presence of coordinate covalent bonds.\nto satisfy the octet rule for all atoms in the ion.\nto reflect the overall charge of the ion.\nsend me a copy of my responses\nsubmit\nclear form

Answer

Brief Explanations:

  1. A resonance - hybrid is the actual structure of a molecule which is an average of all contributing resonance structures. Resonance structures are just different Lewis - structure representations of the same molecule.
  2. For a polyatomic ion, the overall charge of the ion must be accounted for. Adding or subtracting electrons from the total number of valence electrons reflects this overall charge. A positive charge means electrons are lost, and a negative charge means electrons are gained.

Answer:

  1. A hybrid of average of all the contributing resonance structures.
  2. To reflect the overall charge of the ion.