Write a balanced equation for the combination reaction described, using the smallest possible integer coefficients. When hydrogen combines with ethylene (C2H4) , ethane (C2H6) is formed.

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

c. electrical charges of ionic bonds.