Atoms are (stable) if it has (valence) electrons in its outer most energy level.
Answer:
Pink
Explanation:
Because at first its orange then neutral its pink
Answer:
It s a pure substance.
Explanation:
Can only be separated into its different elements by chemical means because it is connected by a chemical bond.
Answer:
Carbonyl
Explanation:
While the diagram is slightly unclear, the molecule most likely being shown is a carbonyl. A molecule is a carbonyl when there is a carbon double-bonded to an oxygen.