Looking at the picture showing water in 3 different states notice the box above each pictures showing how the water particles are arranged in each state in which form is for to least dense
solid
liquid
gas
all forms have the same density

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

b. is the answer hoped i        

4d^55s^1 ( third choice)