Why do metals have high conductivity?
A. All electrons are free to move.
B. All electrons are held in place.
C. Valence electrons are free to move.
D. Valence electrons are held in place.

chemistry sucks a**

explanation:

where are the choice options?

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