Shell In chemistry and atomic physics, an electron shell, or a principal energy level, may be thought of as an orbit followed by electrons around an atom's nucleus. In chemistry and atomic physics, an electron shell, or a principal energy level, may be thought of as an orbit followed by electrons around an atom's nucleus. ... The electrons in the outermost occupied shell (or shells) determine the chemical properties of the atom; it is called the valence shell. a grouping of electrons surrounding the nucleus of an atom; ""the chemical properties of an atom are determined by the outermost electron shell"" group, grouping - any number of entities (members) considered as a unit. Sub Shell Subshell can refer to: i)A subshell of an electron shell ii)A child process launched by a shell (computing) The electrons in the outermost occupied shell (or shells) determine the chemical properties of the atom; it is called the valence shell. Each shell consists of one or more subshells, and each subshell consists of one or more atomic orbitals. A subshell is a set of electrons that all have the same value of (azimuthal quantum number). You can think of as a label for a group of orbitals that have related shapes. A subshell is a separate instance of the command processor -- the shell that gives you the prompt at the console or in an xterm window. Just as your commands are interpreted at the command-line prompt, similarly does a script batch-process a list of commands. Each shell script running is, in effect, a subprocess (child process) of the parent shell. Orbital Orbital, in chemistry and physics, a mathematical expression, called a wave function, that describes properties characteristic of no more than two electrons in the vicinity of an atomic nucleus or of a system of nuclei as in a molecule. In quantum mechanics, an atomic orbital is a mathematical function that describes the wave-like behavior of either one electron or a pair of electrons in an atom. This function can be used to calculate the probability of finding any electron of an atom in any specific region around the atom's nucleus. #OnlineLectures #EducationForFree #FullHD #HappyLearning #Engineering Thanks For Supporting Us Website - http://ekeeda.com Parent Channel - https://www.youtube.com/c/ekeeda Facebook - https://www.facebook.com/ekeeda.video Twitter - https://twitter.com/Ekeeda_Official Blogger - http://ekeeda.blogspot.in Pinterest - https://in.pinterest.com/ekeedavideo Digg - http://digg.com/u/ekeeda_Video Tumbler - https://www.tumblr.com/blog/ekeedavideo Reddit - https://www.reddit.com/user/ekeeda_Video LinkedIn- https://www.linkedin.com/in/ekeeda-video-4a5b83124 Happy Learning : )