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.
For that group, a novel is more than 40K words, a Novella is 17.5K words, and a short story is under 7.5K words. I donât mind a publisher, agent or even a writer giving us his opinion of what word count makes a book, but to try to pass it off as definitive is more than arrogant. Pfft.