Each sublevel has differing numbers of orbitals. Sublevels are designated with lower-case letters. Sublevel s contains one orbital, p contains three, d has five, f has seven, g has nine, h has 11 and i has 13.Know More
The periodic table of elements contains seven rows; therefore, elements can have up to seven energy levels, depending on how many electrons the element possess. Electrons travel around the atom in orbitals. Each orbital houses a maximum of two electrons.
With each subsequent energy level, another sublevel is added. Energy level one contains only one sublevel, the s with its one orbital. Energy level 2 contains s and p sublevels, so this energy level has a total of four orbitals. Energy level 3 has s, p and d sublevels; therefore, this energy level has a total of nine orbitals.Learn More
As a member of the lanthanide series, promethium contains 5 electrons in its 4f sublevel. Each f sublevel contains 7 orbitals with a maximum capacity of 14 electrons. Promethium's ground state electron configuration is [Xe]4f5 6s2.Full Answer >
Nitrogen has seven electrons. Since the atomic number of an element tells how many protons and how many electrons are in that element, nitrogen has an atomic number of seven.Full Answer >
A nitrogen atom contains seven protons. This is true of all isotopes of nitrogen; radioactive isotopes of the element vary only in their number of neutrons.Full Answer >
As of 2014, there are 118 elements on the periodic chart.91 of these are generally in the list of naturally occurring elements, with atomic numbers 1 to 92. Technetium, element number 43, is radioactive with a very short half-life, so scientists initially did not believe it occurred naturally; such beliefs have since been refuted. About.com reports there are 98 naturally occurring elements.Full Answer >