When is air most likely to rise?
a. when it is unstable
b. when it is cooling
c. when it is dry
d. when it is stable

increased stability in the completion of fluorine's outer shell.

pie chart because it is in percents ( % )

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