Magnesium has 12 electrons.........which wud mean that in the 1st energy level(n=1) there r 2 electrons, in the 2nd energy level(n=2) there r 8 electrons and in the 3rd energy level(n=3) there r 2 electrons.......its simple......use the formula 2n^2 where n= 1,2,3,......
so the electron configuration of Magnesium in 2,8,2..................or more precisely 1s2, 2s2, 2p6, 3s2
B - 17
The atomic number always matches the number of protons, or 17 p as listed in the image.
Hope this helps!
This would be considered a mutation.
Answer: c) biologists would track the number of species and their relative abundance in the gulf coast region in 2009, 2010, and 2011
Answer:
the answer is C
Explanation:
this shows how nutrients in the body because it enters the blood capillary which therefore goes through the small intestine.
I really hope this is helpful and understanding.
