6. How does being an isotope relate to changes in relative atomic mass? _________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 7. I am an element with the symbol Na. I have the electron configuration 2,8,1. Fill in the following information for me. Your teacher has amnesia and can’t remember this information, so try to refer to the periodic table and your notes. This is called the _____________ ______________. It tells you how many ______________ there are in the nucleus, and how many ______________ move around on my _____________. Na This is called the _____________ ______________. It tells you the total number of ______________ and _______________ that are in the ______________.This is a ______________ atom. It has ____ protons, ____ neutrons and ____ electrons in a neutral atom. The electron configuration for this atom is ___, ___, ___. It has ___ electrons on the first shell, ____ electrons on the second shell, and ___ electrons on the third shell. The third shell is this atom’s outside shell, which is called the ______________ shell. This is sodium’s nucleus. Fill it in: Add sodium’s electrons to this shell diagram:This atom is likely to gain / lose ____ __________________ from its _________________ shell. This will give the atom a __________________ charge of ____. Because it now has a ________________ charge, it is now a cation / anion, which is a __________________ ion. 8. Fill in the following table that includes information on isotopes: Isotope symbol Isotope Name Atomic numberAtomic mass