Which of the following is likely to be true about the δh for this reaction?
c6h6(l) → c6h6(s)
a. h < 0
b. h = 0
c. h > 0

i think it is true since you can test the answer and can use observations to complete it.

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