Each pictured lewis structure is invalid. identify the error in each case. a central carbon atom is connected to two oxygen atoms through single bonds. there are two lone pairs of electrons on the carbon atom and three lone pairs of electrons on each oxygen atom. a central oxygen atom is connected to two fluorine atoms through double bonds. there are three lone pairs of electrons on each fluorine atom. two fluorine atoms are connected through a triple bond. each fluorine atom has one lone pair of electrons. a central nitrogen atom is connected to three oxygen atoms through single bonds. each oxygen atom has three lone pairs of electrons. the overall charge on the molecule is minus one.

Island arcs island arcs are long, curved chains of oceanic islands associated with seismic activity and mountain-building processes at certain plate boundaries. they occur where oceanic tectonic plates collide. along one side of these island arcs, there is usually a long, narrow deep-sea trench. at island arcs, the denser plate is subducted and is forced into the partially molten mantle under the less dense plate. the islands are composed of the extrusive igneous rocks basalt and andesite. the basalt originates most likely from the plastic mantle. the andesite originates most likely from the melting of parts of the descending plate and sediments that had accumulated on its surface. which list identifies minerals present in andesite from the greatest percentage by volume to the least percentage by volume?