9. Use the simulation to build a system with 5 domains. This is called a trigonal bipyramidal structure. There are two different sites in a trigonal bipyramid as labeled: axial and equatorial. a. Each axial atom is adjacent to equatorial atoms. b. Each equatorial atom is adjacent to 2 axial atoms and 2 equatorial atoms. c. In a system with 4 atoms and 1 lone pair, predict whether the lone pair will be in an axial site or an equatorial site? Explain.

Equatorial sites

Explanation:

The choice of the location of bond pairs or lone pairs depends on the difference between the Xax-E-Xeq and Xeq-E-Xeq bond angles. Where X is a bonding group and E is a lone pair.

It follows that if we place the lone pair in an equatorial site, the structure is less crowded and there is less repulsion than when we place the lone pairs in an axial site.

Summarily, a lone pair occupies more space around the centeral atom than a bond pair hence it needs to be placed at an equatorial site where it experiences less repulsion than when it is placed in an axial site.

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.