1. The hybridization of Xe in $XeF_{2}$ is __________ and its shape is __________.
**Answer:** $sp^{3}$d; linear
2. The bond order of $F_{2}$ is __________ and it is __________ (para/dia)magnetic.
**Answer:** 1; diamagnetic
3. The bond angle in $H_{2}O$ is __________ because it has __________ lone pairs on O.
**Answer:** 104.5°; 2
4. For species with Z __________ 7, the MO filling order has π2p __________ σ2p.
**Answer:** ≤ (less than or equal to); before (lower in energy than)
5. A molecule has SN = 6 with 2 lone pairs. Its hybridization is __________, electron geometry is __________, and molecular shape is __________.
**Answer:** $sp^{3}$$d^{2}$; octahedral; square planar
6. The dipole moment of $CCl_{4}$ is __________ D because its __________ symmetry causes bond dipoles to __________.
**Answer:** 0; tetrahedral; cancel
7. $O_{2}$ is __________ because MOT places __________ unpaired electrons in __________ orbitals.
**Answer:** paramagnetic; 2; degenerate π*2p
8. In Fajan's rules, covalent character INCREASES with __________ cation size and __________ anion size.
**Answer:** decreasing (smaller); increasing (larger)
9. The Born-Haber cycle equation is: U = $\Delta Hf$ − $\Delta Hs$ub − __________ − __________ − EA
**Answer:** IE; ½$\Delta H$_diss
10. The bond order of $N_{2}$ is __________ and it is formed by __________ sigma and __________ pi bonds.
**Answer:** 3; 1; 2
11. $XeF_{4}$ has __________ lone pairs on Xe, making it __________ shaped, unlike $SF_{6}$ which is __________.
**Answer:** 2; square planar; octahedral
12. The resonance energy of benzene is approximately __________ kJ/mol, which explains its __________ stability.
**Answer:** 150; extra (aromatic)
13. In $PCl_{5}$, axial P–Cl bonds are __________ than equatorial P–Cl bonds due to __________ repulsion.
**Answer:** longer; greater (more 90° lp/bp repulsion from equatorial bonds)
14. CO is isoelectronic with __________ and has bond order __________.
**Answer:** $N_{2}$; 3
15. The shape of $ClF_{3}$ is __________ with hybridization __________ because Cl has __________ lone pairs.
**Answer:** T-shaped; $sp^{3}$d; 2$
Part of PC-03 — Chemical Bonding & Molecular Structure
Fill in the Blanks: VSEPR and MOT Practice
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