Do you agree or disagree with this statement, "The total number of
atoms does not change in a
chemical reaction and therefore
mass is conserved"? Explain your
stance using evidence from the
previous slides.

your mom.com . : 0000

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72