Describe the orbital notation and electron configuration notation to describe the placement of all of the electrons in an atom of nitrogen.

I would say that orbital notation and electron configuration give the same information, and for nitrogen it is indeed 1s2, 2s2 2p3.

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom