How many molecules are in 2.50 moles of methane? A. 1.505 x10*24 molecules of CH4

B.2.00 x10*24 molecules of CH4

C. 1.50 x10*24 molecules of CH4

D.1.51 x10*24 molecules of CH4

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