If k and l shells of an atom are full then what would be the total number of electrons in the atom

Shell Model The nuclear shell model is a model of the atomic nucleus. It uses the Pauli exclusion principle to explain the nucleus structure in terms of energy levels. In order to study the complete nucleus structure, various nuclear shell models were proposed. The first shell model was introduced in the year 1932 by Dmitry Ivanenko and later on developed by various physicists – Maria Goeppert Mayer, Eugene Paul Wigner, and J.Hans.D. Jensen in the year 1949. Table of Contents • • • • • Nuclear Shell Model It basically explains the distribution of energy levels into different atom shells and nucleus atom shells. A shell is described as the The unpaired ones are responsible for the properties of a nucleus and valence electrons are responsible for different chemical properties of elements. With the help of the shell model, we can accurately predict the properties of nuclei such as Shell Model of the Atom It explains the arrangement of different electrons present around the nucleus of an atom as per energy levels. Atomic Number = number of electrons in an atom The atomic shell model explains the structure of atoms. The negatively charged fundamental particles which are known as electrons are considered to occupy diffuse shells in the space that surrounds the positively charged nucleus. The shell which is closest to the nucleus is the first shell. The shells are designated as: K First shell L Second shell M Third shell and so on The sequence in which the electrons occupy the s...

If K and L shells of an atom are full and only one electron is present in the M shell, then the total number of the electrons in the atom would be 11 because the maximum number of electrons that can occupy K and L shells are 2 and 8 respectively. As only 1 electron is present in the M shell the total comes out to be 11. Corresponding to 11 electrons there will be 11 protons in the atom, so the atomic number of the element will be 11. The element with atomic number 11 is Sodium which has the symbol Na.

At some point in your chemistry education, you may have been introduced to the song “The Elements,” in which Tom Lehrer does a rapid-fire musical rendition of all the elements' names. Like me, you may even have been offered the opportunity to memorize this song for extra credit. If so, it’s possible that you still remember the names of all the elements, which is an impressive feat—not to mention a fun trick to pull out at parties. If you’ve memorized the names of the elements, does that mean you’ll never need a periodic table again? Well ... probably not. That’s because the periodic table isn’t just a big bucket that holds all of the elements. Instead, it’s more like a filing system. The position of each element in the table gives important information about its structure, properties, and behavior in chemical reactions. Specifically, an element’s position in the periodic table helps you figure out its electron configuration, how the electrons are organized around the nucleus. Atoms use their electrons to participate in chemical reactions, so knowing an element’s electron configuration allows you to predict its reactivity—whether, and how, it will interact with atoms of other elements. By convention, elements are organized in the periodic table, a structure that captures important patterns in their behavior. Devised by Russian chemist Dmitri Mendeleev (1834–1907) in 1869, the table places elements into columns— groups—and rows— periods—that share certain properties. These p...