What is the cause of dipole interactions?

a sharing of electron pairs
b attraction between polar molecules
c bonding of a covenant bonded hydrogen to an unshared electron pair
d attraction between ions

Explanation:

A dipole refers to the separation of charges within a molecule between two covalently bonded atoms or atoms that share an ionic bond.Dipole interactions result when the partially negative portion of one of the polar molecules is attracted to the partially positive portion of the second polar molecule.

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-