Answer:
they are in group II and they have two electrons in their outermost energy levels ( valency)...is this helpful?
Because ionic bonds form between oppositely charged particles. Opposit s attract.
If that’s not correct, give me the options and I can try to help further.
Geology - rocks and minerals. Rhyolite is a felsic extrusive rock. Due to the high silica content, rhyolite lava is very viscous. It flows slowly, like tooth paste squeezed out of a tube, and tends to pile up and form lava domes.
Answer: A form of precipitation requires melting and refreezing as they fall towards the ground.
Explanation: The hail begins as rain and freezes as it falls down to the surface.
Open systems are when matter and energy can freely move in and around the system. Closed Systems is when energy can freely move back and forth between the system but matter can not.
