Basically, electron pairs in a molecule want to adopt a geometry to maximize their distance apart, since like charges repel each other. For example, methane (CH4) adopts a tetrahedral arrangement - you can think of this as the carbon atom at the center of a pyramid and the 4 hydrogens at the four vertices. Bonds angles are 109.5 degrees. This is a case where all electrons are bonding electrons; they form the 4 bonds between carbon and hydrogen. Lone electron pairs also affect the geometry. For instance, water (H2O) has two lone electrons pairs; it adopts a bent/angular geometry.
Spotify is a music, podcast, and video streaming service, officially launched on 7 October 2008. It is developed by startup Spotify AB in Stockholm, Sweden. It provides digital rights management-protected content from record labels and media companies.
20 best Spotify apps. Spotify launched app support back in November. Fans responded with a collective hurrah! And so did we. Making Spotify into an app platform is very clever - a huge step towards making Spotify a truly social music service. You'll find them by clicking on App Finder in the program's sidebar. It's six months on and the number of apps for Spotify is slowly, steadily growing. Many add content to the service, some add functionality. All add some kind of value. We tested every single one and these are our definitive top 20 - the Spotify apps that set the bar for those to come.