The document contains questions about trends in the periodic table including ion size, isoelectronic series, electron configuration of ions, ionization energy, electron affinity, reactivity of alkali metals, balancing equations for alkali metal oxide reactions, and properties of noble gases. It asks about trends in properties including ionic radius, ionization energy, metallic character, and molecular structure as one moves through the periodic table.

1. GENERAL CHEMISTRY-I (1411)
S.I. # 30
1. What is the trend of Ion Size in the periodic table?
2. What is an Isoelectronic series?
3. A. How many electrons do O2- ; F- ; Na+ ; Mg2+ and Al3+ have ?
B. List in increasing order of nuclear charge
C. List in decreasing ionic radius
5. Describe the trend of Ionization energy going down a group and across a period.
6. Why is the outermost electron more readily removed as we go down a group?
7. Explain why ionization energy increases across a period.
8. Electron affinity is the ____________ of ionization energy.
a. heat b. order c. possibility d. opposite

2. 9. _____________ Is the energy change when an atom gains an electron.
a. Ionization energy
b. Enthalpy
c. Electron affinity
d. Entropy
10. Does the reactivity of the alkali metals increase or decrease down a group and
why?
11. Complete and balance the following alkali metal oxide reactions:
a. Li (s) + O2 (g)  Li2O (s) (oxide)
b. Na (s) + O2 (g)  Na2O2 (s) (peroxide)
c. K (s) + O2 (g)  KO2 (s) (superoxide)
12. When water is reacted with a metal oxide what is the product formed?
a. metal ions
b. metal hydroxide
c. metal anions
d. metal solid
13. As we move down the group the metallic character _____________.
14. Describe each below as metal, metalloid, or nonmetal.
a. O2
b. Te
c. Po
15. All halogens consist of _______________ molecules
a. monotomic b. polyotonic c. diatomic d. sistronic
16. List the properties of the noble gasses: