Which of the following is a possible formula unit? pbo li2b al2pb3 clo

Answer is: PbO.

Formula unit is the representative particle of an ionic compound. It is lowest whole number ratio of ions in an ionic compound, for lead(II) oxide that is PbO.

Lead(II) is oxide with ionic bonds. Lead(II) contains one lead cations (charge of ion is 2+) and one oxygen aniona (charge for ion is 2-).

Other examples do not have ionic bonds.

Ionic bond is the electrostatic attraction between oppositely charged ions (cations and anions).

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

the solar system used to have much dust particles option no d