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Basic Chemistry Practice Test: Molecular Geometry and Bonding Theories
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Basic Chemistry Practice Test: Molecular Geometry and Bonding Theories
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25 Questions

1. The hybridizations of nitrogen in NF3 and NH3 are __________ and __________, respectively.
2. The hybridization of the terminal carbons in the H2C=C=CH2 molecule is __________.
3. In order for rotation to occur about a double bond, __________.
4. Of the following species, __________ will have bond angles of 120°.
5. Electrons in __________ bonds remain localized between two atoms. Electrons in __________ bonds can become delocalized between more than two atoms.
6. In a typical multiple bond, the s bond results from overlap of __________ orbitals and the p bond(s) result from overlap of __________ orbitals.
7. The molecular geometry of the + H3O ion is __________.
8. Based on molecular orbital theory, the bond order of the Be–Be bond in the Be2 molecule is __________.
9. A typical triple bond __________.
10. There is/are __________ p bond(s) in the molecule below.
11. Valence bond theory does not address the issue of __________.
12. Of the following molecules, only __________ is polar.
13. There are __________ unhybridized p atomic orbitals in an sp-hybridized carbon atom.
14. A molecular orbital can accommodate a maximum of __________ electron(s).
15. Based on molecular orbital theory, the bond order of the C–C bond in the C2 molecule is __________.
16. Which of the following molecules or ions will exhibit delocalized bonding? NO2 - NO4 + N3 -
17. Molecular Orbital theory correctly predicts paramagnetism of oxygen gas, O2 . This is because __________.
18. The central iodine atom in IF5 has __________ unbonded electron pairs and __________ bonded electron pairs in its valence shell.
19. The central iodine atom in the ICl4 - ion has __________ nonbonded electron pairs and __________ bonded electron pairs in its valence shell.
20. According to valence bond theory, which orbitals on bromine atoms overlap in the formation of the bond in Br2 ?
21. Of the following, only __________ appears to gain mass in a magnetic field.
22. The O–S–O bond angle in SO2 is slightly less than __________.
23. The molecular geometry of the BCl3 molecule is __________, and this molecule is __________.
24. The molecular geometry of the SF2 molecule is __________.
25. The hybrid orbitals used for bonding by the sulfur atom in the SF4 molecule are __________ orbitals.