Question

Please answer these two questions complete with an explanation to get full points, thank you :)

The electron-domain (or electron-pair) geometry ?s the geometry assumed by all the valence electron pairs around a central atom (both bond and lone pairs), whereas the molecular geometry describes the arrangement in space of the central atom and the atoms directly attached to it. If the electron-domain geometry for ClF2+ is tetrahedral, what is the molecular geometry? Determine the formal charge on O in N0+.

Answer 1

Answer 2

PART A
Cl 7 electrons (1 * 7 = 7)
F 7 electrons (2 * 7 =14)
"-" 1 electron

Total = 22 electrons

draw a bond between Cl and F first, there are 2 Cl-F bonds, so 4 electrons are used up. to make everything octet, draw 3 pairs of electrons on each fluoride, two of them used up another (6 * 2) = 12 electrons. Totally we used up 16 right now. 6 electrons left = 3 pairs all go to Cl.

now Cl has 3 pairs of electrons and 2 Cl-F bonds, the electron domain geometry is trigonal bipyramidal. the electrons govern the locations of electron pairs and the fluorine atoms around Cl. that's why it is called VSEPR (valence shell ELECTRON PAIRS repulsion) theory

molecular geometry is based on the LOCATION of atoms.
lone pairs on Cl are at the equatorial positions because they occupy more space, there is 120 degree space at equatorial, only 90 degree at axial. if 3 lone pairs occupy the equatorial position, then the fluorine atoms will occupy the two axial position, that makes F-Cl-F a linear anion.

PART B

Formal charge on an atom = [Total number of valence electrons]