In an atom, electrons travel outside the nucleus.
c. travel outside the nucleus.
It doesn't take much energy to remove one electron from a sodium atom to form an Na+ ion with a filled-shell electron configuration. The first ionization energy of magnesium is larger than sodium because magnesium has one more proton in its nucleus to hold on to the electrons in the 3s orbital.
350kg up, 100 kg sideways.
If my math is right, it should be around 4.33x10^23
To get this you need to find the atomic weight of MgI2, which is around 278. You divide the mass in grams by the atomic mass to find Moles, then you multiply the moles by Avogadros number: 6.022x10^23. Hope I was helpful
