Ascientist is conducting a descriptive experiment where she is monitoring sea level along coastal towns in california. what is a major benefit of this experiment? the relationship shows cause and effect. it is repeatable. a large amount of data can be collected. results can change over time.

            Phosphine is least soluble because it does not form hydrogen bonds with water molecules.

Explanation:

                   Hydrogen Bonding interactions are created between two molecules having a Hydrogen atom attached to most electronegative atom like Fluorine, Oxygen and Nitrogen on one molecule and the the most electronegative atom of the second molecule.

                    In given case, water contains a most electronegative atom like Oxygen, also it contains hydrogen directly attached to oxygen but in Phosphine (PH₃) there is no most electronegative atom as Phosphorous is less electronegative.

                    Hence, Phosphine fails to develop Hydrogen bonding with water molecules therefore it is less soluble than NH₃.