Isn't it "gravity" this would makes sense because grvaity difines weight
Answer:
B. In the same group
Explanation:
Elements in the same group shared chemical properties.
Surface air pressure is a consequence of the weight of the air acting on its surface. For example, if you are standing on Mars, the pressure around you is what you call the surface air pressure. Thus, that surface air pressure must be 0.007 atm.
