If an atom has 2 electrons in the 3rd orbital, what “time” on a clock would the 2nd electron be at? o’clock.

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth