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Chemical Periodicity

Examples of
Multiple Choice Questions

The atom having the valence-shell configuration 4s2 4p5 would be in:
(a) Group VIA and Period 5
(b) Group IVB and Period 4
(c) Group VIB and Period 7
(d) Group VIIA and Period 4
(e) Group VIIB and Period 4

Select the term best describing the series of elements: Mn, Fe, Co, Ni, Cu.
(a) d-transition metals
(b) representative elements
(c) metalloids
(d) alkaline earth metals
(e) halogens

Which element has the largest atomic radius?
(a) Li
(b) Na
(c) Rb
(d) F
(e) I

Which of the following terms accurately describes the energy associated with the process:
Li(g) Li+(g) + e-
(a) electron affinity
(b) binding energy
(c) ionization energy
(d) electronegativity
(e) none of these

The species that contains 24 protons, 26 neutrons and 22 electrons would be represented by the symbol:
(a) 50V3+
(b) 26Cr2+
(c) 50Cr2+
(d) 50Mn2+
(e) none of these

Which element has the lowest first ionization energy?
(a) He
(b) Ne
(c) Ar
(d) Kr
(e) Xe

Which element has the highest first ionization energy? (Note: this is an exception to the general trend - see notes- you may be responsible for this.)
(a) Be
(b) B
(c) C
(d) N
(e) O

Which of these isoelectronic species has the smallest radius?
(a) Br-
(b) Sr2+
(c) Rb+
(d) Se2-
(e) They are all the same size because they have the same number of electrons.

Which of the following elements has the greatest attraction for electrons in a covalent bond?
(a) Ge
(b) As
(c) Se
(d) Br
(e) Bi

Which statement is wrong?
(a) The atomic weight of carbon is about 12.
(b) The most stable ion of lithium is Li+.
(c) A phosphorus atom is larger than an antimony atom.
(d) The radius of a sodium atom is larger than that of a sodium cation.
(e) Oxygen has a less negative electron affinity than fluorine.

All of the following properties of the alkaline earth metals increase going down the group except
(a) atomic radius
(b) first ionization energy
(c) ionic radius
(d) atomic mass
(e) atomic volume

Which of the following is an ionic hydride?
(a) PH3
(b) H2S
(c) HI
(d) KH
(e) CH4

Which of the following is the most basic oxide?
(a) N2O3
(b) N2O5
(c) P4O6
(d) P4O10
(e) Bi2O5


1. (d) 2. (a) 3. (c) 4. (c) 5. (c) 6. (e) 7. (d) 8. (b) 9. (d) 10. (c) 11. (b) 12. (d) 13. (e)

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| Fundamentals of Chemistry | Chemical Formulas & Composition Stoichiometry | Chemical Equations & Rxn Stoichiometry | Types of Chemical Reactions |
| Atomic Structure | Chemical Periodicity | Chemical Bonding | Molecular Structure/Covalent Bonding Theories| Molecular Orbital Theory |
| Acids/Bases/Salts - Theory & Rxns | Acids/Bases/Salts - Calculations (including balancing redox rxns) | Gases | Solids & Liquids | Solutions |
| Thermodynamics | Kinetics | Equilibrium | Aqueous Equilibrium - Acids/Bases/Salts | Aqueous Equilibrium - Buffers & Titrations |
| Aqueous Equilibrium - Slightly Soluble Salts | Electrochemistry | Metallurgy | Metal Properties & Rxns | Nonmetals & Metalloids |
| Coordination Compounds | Nuclear Chemistry | Organic Chem - Formulas/Names/Properties | Organic Chem - Shapes/Rxns/Biopolymers |

To report any corrections, please e-mail Dr. Wendy Keeney-Kennicutt.