Ca, they only have two valence electrons, in order to become more stable, they would like to lose all of them
I think the answer is A but I could be wrong
Majority of an atoms mass comes for protons and neutrons which makes up the nucleus.
Answer:
because in the different countries it is distributed unevenly.
Explanation:
hope this helps
I think the amount would be a 0.4998 mol
I did moles=mass(g)/A,r
=12.5/24.3 to get that