Answer:
The closest shell to the nucleus is called the "1 shell" (also called the "K shell"), followed by the "2 shell" (or "L shell"), then the "3 shell" (or "M shell"), and so on farther and farther from the nucleus.
D. photosynthesis is an endothermic reaction
Mg
Explanation:
I think the answer is Mg
6.022⋅1023