Answer:
It is called Ionization Energy.
<span>The American Council for an Energy-Efficient Economy works to (c) </span>invest in clean energy technologies that will strengthen the economy.
Their aim is to promote energy efficiency which will ultimately benefit the economy and the environment.
Number of neutrons = Atomic mass - Atomic number (number of protons)
Hope that helps!
Big grasshoppers, because it does not involve a number.
Hope this helps! <3