Which factors affect electronegativity?
A. Number of electrons and atomic radius
B. Number of unshielded electrons and density of the element
C. Atomic radius and number of unshielded protons
D. Density of the element and atomic radius

I guess it would be C.

Explanation:

because it sounds familiar

i do not get it   at all

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