compounds with polyatomic ion – ionic or molecular? please help thank you?

3 Answers

• If the polyatomic molecule is paired with a metal then it's ionic; otherwise it's molecular (covalent).

  The following are ionic:

  Ba(OH)3

  Mn(SO4)3

  The following are molecular:

  H2SO3

  H2CrO4

  HClO

  H2CO3

  Notice that even though chromate has a metal as part of the polyatomic molecule, it isn't paired with a metal cation. Therefore, the compound is referred to as molecular.

  The names of the two compounds you requested are

  Sulfurous acid (H2SO3)

  Barium hydroxide (Ba(OH)2). The one you wrote is a typo because barium only oxidizes up to the 2+ state.

• H2so3 Ionic Or Molecular

  Source(s): https://owly.im/baIAN

• the elements in polyatomic ions are covalently bound. as a whole, the polyatomic ions form ionic bonds with the cation

  So, SO3-2 is a covalent bond but the 2 HSO3 bonds are ionic, especially when bound to a metal. this is not dependent upon electronegativity because that deals with the bonding ability of each element.