It is 4 because if you think about it it makes more sense
The liver cells produce proteins to avoid blood clotting. They also break down old or damaged blood cells.
Answer:
it is a gas not a mixture
Answer:
Explanation:
The 
has 22 electrons arround the nucleous. Its ground state configuration following the diagonal rule is:
In term of the previous noble gas:
![[Ar] 4s^2 3d^2](https://tex.z-dn.net/?f=%5BAr%5D%204s%5E2%203d%5E2)
