All the elements of a family in the periodic table have what feature in common? a. they all have similar chemical properties. b. they all have the same number of protons in the nucleus. c. they are all located in the same horizontal row or period. d. they all have the same number of electrons in the electron cloud.

Which of the following warnings would an agricultural chemist tell a farmer who wants to recycle his or her own ammonia? recycling ammonia is a difficult process that sometimes takes weeks. recycling ammonia requires a degree in biochemistry or a related field. recycling ammonia can be harmful because it is highly flammable and toxic. recycling ammonia costs too much money considering the price of the necessary chemicals.