Question 23
Which of the following statements are true? Choose all that apply.
A When drawing a Lewis structure, expanded valence might be considered for nitrogen as a central atom, but not sulfur or
phosphorus.
B Aluminum and boron are two elements that regularly form compounds with incomplete valences.
C Lone pairs of electrons on the central atom do not count towards the number of groups on a central atom when
considering molecular geometry using VSEPR because they do not take up space the way that a bonded group does.
D Bent molecular geometries may be observed with molecules that have different electronic geometries, such as tetrahedral
or trigonal planar.
E VSEPR theory predicts that molecules will form a geometry about a central atom that maximizes the angular distance
between the groups bound to the central atom.
F When there are three groups bound to a central atom and no lone pairs of electrons, the bonding geometry should be
trigonal planar.
