)the electron-domain geometry of is tetrahedral. a. cbr4 b. ph3 c. ccl2br2 d. xef4 e. all of the above except xef4

The  electron domain  geometry  of    all  of the above except XeF4  (answer E)  is a     tetrahedral.

 Explanation

Tetrahedral is a molecular shape  that result when  they are four bonds and no  lone pair  around the central atom  in the molecule.  

The bond  bonded to the  central atom  lie at the  corner of tetrahedron  with 109.5 degrees between them.

CBr4,PH3 , CCl2Br2  has  a tetrahedral  geometry  while  XeF4  has  a square  planar.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6