Answer:
The mass number of an atom is its total number of protons and neutrons. Atoms of different elements usually have different mass numbers , but they can be the same. For example, the mass number of argon atoms and calcium atoms can both be 40.
Explanation:
Sugar(glucose) and oxygen.
Answer: The orbiting body left the orbit. The gravitational attraction between the two objects was too weak for a stable orbit to form Explanation:Its right!!
