2. Atoms and the Periodic Table

Locate aluminum in the periodic table and give its group number and period number.

Identify the group or period number described by each of the following:b. begins with helium

Identify the group or period number described by each of the following:a. contains C, N, and O

Using TABLE4.4, identify the function of each of the following in the body and classify each as an alkali metal, an alkaline earth metal, a transition element, or a halogen:b. Cu

Use the following blank periodic table to show where the elements matching the following descriptions appear.

a. Elements with the valence-shell electron configuration ns^2 np^5b. An element whose third shell contains two p electrons c. Elements with a completely filled valence shell