Select the correct value for the indicated bond angle in each of the compounds.

90°, 180°, 109.5°, 120°, <120°, <109.5°

a) O−O−O angle of O3
b) F−B−F angle of BF3
c) F−O−F angle of OF2
d) Cl−Be−Cl angle of BeCl2
e) F−P−F angle of PF3
f) Cl−Si−Cl angle of SiCl4