Valence electrons. 1  The highest principal shell of an atom, in which there is at least one electron, is called the valence shell. 2  The electrons on the valence shell are called valence electrons. 3  Main group elements can hold a maximum of eight electrons in their valence shell. A full valence shell is known as an octet.
Novella. A novella is a written, fictional, prose narrative normally longer than a short story but shorter than a novel. The English word novella derives from the Italian word novella, feminine of novello, which means new. The novella is a common literary genre in several European languages.
noun, plural stories. 1. a narrative, either true or fictitious, in prose or verse, designed to interest, amuse, or instruct the hearer or reader; tale. 2. a fictitious tale, shorter and less elaborate than a novel. 3. such narratives or tales as a branch of literature: song and story.