For Na it's 0.93, Al is 1.61 and for P it's 2.19 .
This is called peer review. A peer is a person of at least equal standing in the area of intellect to the person being reviewed.
Chemical bonds form between their atoms, the result is a chemical compound
Due to a law being a predicted sort of event that is bound to happen every time, a pattern, we can say that since the cell theory is a pattern instead of a possible explanation, it can be a law. However, since we don't have an accurate explanation to the part which claims that they all come from pre-existing cells, it is a theory, we don't have enough information to confirm that the theory is a solid fact, therefore, we can't confirm that it is a law.