indicate whether each of the species fulfills the octet rule, explain your answers, a) a magnesium nucleus surrounded by 10 electrons b) a phosphorus ion c) an argon atom​

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?  

Just took the quiz on edgenuity and the correct answer is "c.  4.54 x  10–12  j"

(no3)⁻n has oxidation number x,o has oxidation number -2.(x*1 -2*3) charge of the nitrate ion, and we know that charge of the nitrate ion =-1.so,(x*1 -2*3) =-1x-6=-1x=+5answer a. +5.

Putting salt in vinegar water