What does it mean when a compound’s chemical formula does not include any numbers?

there is only one atom of each element.
there are only single bonds in the molecule.
all the atoms have double bonds.
the molecule does not have any bonds.

Try to answer all questions if possible i will take anything this is worth 21 ! ! 1. what rights do citizen's have in a monarchy? 2. what countries practice monarchy? 3. what is one advantage of a monarchy? 4. what is one disadvantage of a monarchy? 5. what rights do citizen's have in a dictatorship? 6. what countries practice dictatorship? 7. what is one advantage of dictatorship? 8. what is one disadvantage of dictatorship?