Which of the following molecular geometries (shapes) are always polar if 1 of the atoms around the central atom is fluorine and the rest are bromine? (example: cfbr3)select all that apply. a. t-shapeb. square planarc. octahedrald. lineare. tetrahedralf. trigonal bipyramidalg. trigonal pyrmaidalh. square pyramidali. seesawj. bent

Calculate the change in entropy if br2(l) is converted into gaseous br atoms. s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)

Iwill give extra points to who gets this right

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende