You have 10.0 g each of Na, C, Pb, and Cu. Which contains the largest number of moles?

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.