Can some one help me plz

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

How does the attraction between particles affect the ability of a solvent to dissolve in a substance