Answer:
'An ion has a non-zero electric charge. A radical has an atom with unfilled electron shells and so is very reactive, but is electrically neutral.'
'Atoms are single neutral particles. Molecules are neutral particles made of two or more atoms bonded together.'
'The primary difference that lies between these organic compounds and inorganic compounds is that organic compounds always have a carbon atom while most of the inorganic compounds do not contain the carbon atom in them.'
Answer:
It is either
Past volcanic eruptions leave marks on rocks near the volcano.
Past volcanic eruptions leave marks in the atmosphere.
My guess is C.
Explanation:
C. transition, as they show variable oxidation states.