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)

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation:

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex