Electrons can jump between energy levels but can never be found in what energy level

Electrons can jump from energy level to energy level (for example energy level 1 to 2) but they can NEVER be found in between energy levels.

the atomic mass is the bottom number on the element.

-steel jelly

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