1. analyze the problem
you are given the number of atoms of zinc and must find the equiva-
lent number of moles. if you compare 4.50 x 1024 atoms zn with
6.02 x 1023, the number of atoms in one mole, you can predict that
the answer should be less than 10 moles.
known
unknown
number of atoms = 4.50 x 1024 atoms zn mol zn = ? mol
1 mol zn = 6.02 x 1023 atoms zn

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.