1.24 moles of NaF is needed for a chemical reaction, how many grams should be weighed out? Show your calculations in an organized way with dimensional
analysis handwritten on a sheet of paper.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.