Estimate the composition of the human body in terms of metals non metals and metalloids

What is the maximum number of electrons that an atomic orbital can contain?

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

Of element x has 22 protons, how many electrons does it have