CO2 ; H20- They are the only ones that, on both sides, combined with another element and bonding of atoms
The 2nd one I think but I need some points
Distance and period of time is the correct answer
Hope this helps!
Answer:In chemistry, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
Explanation: hope this helped
B is the.answer for this problem
