When a central atom has an expanded octet, what geometric shape might the species exhibit?

See saw

Explanation:

An expanded octet shape best resembles the shape of a see saw. Generally in an expanded octet shape , the atom at the center of the structure has a Lewis structure that possess five or six regions of electron density. Thus there are can be more than one geometrical shape depending on the number of lone pairs. They have more that 8 electrons in their orbit and thus violate the octet rule.

Some common compounds that exhibits these expanded octet shape are Phosphorus pentachloride (PCl5) , hexafluoride (SF6)

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).

lesson summarykaryotypes a genome is the full set of all the genetic information that an organism carries in its dna. chromosomes arebundles of dna and protein found in the nucleus of a eukaryotic cell.