C. The approach of the scientific method varies from one scientist to another.
I believe the correct answers from the choices listed above are the first two options. The molecules O2- and F2+ are <span>expected to have one unpaired electron. This can be determined by looking at the value of the charge. Hope this answers the question.</span>
Answer:
The substance is a mixture
Explanation:
The question lets us know that when solvent X was used as the mobile phase, we obtained only one spot. This may deceive us into thinking that the substance is pure since a pure substance has only one spot on a chromatogram.
However, the same substance yields three spots with solvent Y. This shows that the unknown sample is a mixture of substances and solvent X was unable to fully separate the mixture.
Answer:
D.
Explanation:
You try to get 8 electron on the outermost "shell" so you have no left over or "valence" electrons.
It means that they are bonded together