The carbon atom has unique properties that allow it to form covalent bonds to as many as four different atoms, making this versatile element ideal to serve as the basic structural component, or “backbone,” of the macromolecules.
Repetition, rhyming ... that's all I can think of
Is this a book you working in on ?
Answer:
ionic bond
Explanation:
ionic bond results from electrostatic attraction between opposite charges
1. compound
2. element
3. element
4. compound
elements are only one type of thing, compounds are more than one type of thing
