General Chemistry Name: Periodic Table Conceptual Exercise #9 CHEM 1364 Spring 2

Question

General Chemistry Name: Periodic Table Conceptual Exercise #9 CHEM 1364 Spring 2018 2. Place the following elemental symbols as monatomic ions in the spaces represent shown below on the rows which Use each elemental symbol only once. Not every space will be their family/group classification. utilized Ga Rb Fr Br Li Ra Se Cd Te Xe Au Te O Ar At F Ag Cu Family/Group Element Coinage Metals Noble Gases Chalcogens Phictogen Halogens Alkali Metals Alkaline Earth Metals None of these Named Families 3. Rank the following elements by size from largest to smallest: F. At, CL, I. Br Largest Smallest 4. Rank the following ions by size from smallest to largest: H+.K+.Cst. Rbt. Mg.A Smallest Largest 5. Rank the following isoelectronic series by size from smallest to largest: Ca. P. K,S,Ar, c Smallest Largest 6. Which of the elements or ions should have the greatest ionization energy: Ca, P, K, S, Ar, C

Explanation / Answer

family/ Group                         Element
Coinage metals                         Cu,Ag,Au
Noble Gases                            Ar,Xe
Chalcogens                             O,Se,Te
Pnictogens                             As
Halogens                               F,Br,I,At
Alkali Metals                          Li,Rb,Fr
Alkaline Earth Metals                  Ra
None of these Named families           Sc, Tc,Cd

3. At, I, Br, Cl, F

4. Al^3+,Mg^2+, H^+,K^+, Rb^+, Cs^+

5. Ca^2+,K^+, Ar, Cl^-, S^2-, P^3-

6. Ar,P

class                       elements
Cations                     Li, Rb, Ga, Cd,Ra
Anions                      Br, As,Se,Te
neutral                     Fr   ( radio active element)

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