Ca because it has a larger atomic radius.
Answer:
The force that keeps the planets in orbit is gravity.
It’s either the first or second one
I think it’s the first one - the outer cells of the blastocyst
Answer:
3Mg(NO3)2(aq)+2Na3PO4(aq)⇒Mg3(PO4)2(s)+6NaNO3(aq)
Explanation: