A certain intermolecular force is created when a cation or an anion comes in contact with a neutral molecule that has dipole so what best explains the strength of this intermolecular force

The total number of nucleons

The answer is nitrogen-containing bases

The population of unionid mussels decreased after zebra mussels were introduced. zebra mussels competed with the unionid mussels for food. the zebra mussels were able to displace the unionid mussels, allowing the zebra mussel population to increase  over the years. the unionid mussel population decreased because  of lack of food.