Pure substance element I think
Answer: option C. HF
Explanation: A polar bond is a covalent bond between two atoms where the electrons forming the bond are unequally distributed. Fluorine is more electronegative than hydrogen so the electrons in the bond are more closely associated with the fluorine atom than with the hydrogen atom.
Answer: Add more information please! Thanks!
Explanation:
Dimitri mastered in Elements
Is an example of a climate change