The answer is (1) 10. The protons of Mg atom is 12. So the Mg atom has 12 electrons. The Mg2+ ion has lost two electrons so it has two positive charge. Then the answer is 10 electrons.
Answer:
1kg= 1000 grams hope it helps
Well depends how fast they're going if it's a slow speed a bus but at a fast speed a bike because you wanna be careful while stopping