Its c ok im sorry if i got the last answer wrong
Answer:There are total 118 elements in world as about marbale
Explanation:
Answer:
cools as it rises, then sinks back down
Explanation:
The movement of air is a convection current. Convection currents occur when warm air rises, cools down, and sinks due to gained density, replacing the warm air closer to the ground, creating a cycle.
The answer is Strontium(Sr). The reactive increase from right to left. And this element has two valence electrons. So Rb is not correct. Then the very reactive metal is Sr.
Charles' law (also known as the law of volumes) is an experimental gas law that describes how gases tend to expand when heated.
